/* roulang page: index */
:root {
  --bg: #0B101B;
  --bg-deep: #080C14;
  --panel: #101728;
  --panel-2: #131C2E;
  --line: rgba(255, 255, 255, 0.09);
  --card-bg: rgba(255, 255, 255, 0.04);
  --text: rgba(255, 255, 255, 0.94);
  --muted: rgba(255, 255, 255, 0.72);
  --weaker: rgba(255, 255, 255, 0.48);
  --cyan: #21F0D0;
  --purple: #6D6FFF;
  --magenta: #FF3D77;
  --gold: #FFC85C;
  --grad: linear-gradient(135deg, #21F0D0, #6D6FFF);
  --grad-hot: linear-gradient(135deg, #21F0D0, #6D6FFF 55%, #FF3D77);
  --radius-lg: 24px;
  --radius: 18px;
  --radius-sm: 12px;
  --font-zh: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Barlow Condensed", "DIN Alternate", "Rajdhani", "HarmonyOS Sans SC", sans-serif;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.30);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --maxw: 1440px;
  --section-space: 104px;
}

@media (max-width: 768px) {
  :root {
    --section-space: 72px;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-zh);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
  object-fit: cover;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

input {
  font: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(33, 240, 208, 0.25);
  color: #ffffff;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 1000;
  background: var(--cyan);
  color: #04121A;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 0 0 12px 12px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
  color: #04121A;
}

.container {
  width: min(var(--maxw), 100% - 48px);
  margin-inline: auto;
}

@media (max-width: 576px) {
  .container {
    width: calc(100% - 32px);
  }
}

/* Chrome / Header */
.site-chrome {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.site-chrome.is-scrolled {
  position: fixed;
  background: rgba(11, 16, 27, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.site-topbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(90deg, rgba(11, 16, 27, 0.65), rgba(16, 23, 40, 0.45));
  color: var(--muted);
  font-size: 13px;
  height: 36px;
  display: flex;
  align-items: center;
}

.topbar-inline {
  width: min(var(--maxw), 100% - 48px);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

@media (max-width: 768px) {
  .topbar-inline {
    width: calc(100% - 32px);
    justify-content: center;
  }

  .topbar-inline span:last-child {
    display: none;
  }
}

.topbar-flag {
  color: var(--cyan);
  font-weight: 600;
}

.topbar-flag strong {
  font-weight: 700;
  letter-spacing: 0.3px;
  color: #ffffff;
}

.site-header {
  position: relative;
  height: 76px;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--grad-hot);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 15px;
  color: #031018;
  letter-spacing: -0.5px;
  box-shadow: 0 0 22px rgba(33, 240, 208, 0.22);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 9px;
}

.brand-txt {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: #ffffff;
  white-space: nowrap;
}

.brand-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 3px;
  font-size: 12px;
  color: var(--weaker);
}

.brand-meta .official {
  display: inline-flex;
  align-items: center;
  padding: 0 6px;
  height: 18px;
  border: 1px solid rgba(33, 240, 208, 0.4);
  border-radius: 20px;
  font-size: 11px;
  color: var(--cyan);
}

@media (max-width: 380px) {
  .brand-name {
    font-size: 17px;
  }

  .brand-meta {
    display: none;
  }
}

.nav-main {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-main .nav-link {
  position: relative;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  padding: 12px 0;
  transition: color 0.2s;
}

.nav-main .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 20px;
  background: var(--grad);
  transition: width 0.3s;
}

.nav-main .nav-link:hover,
.nav-main .nav-link.active {
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(33, 240, 208, 0.24);
}

.nav-main .nav-link:hover::after,
.nav-main .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 52px;
  padding: 0 28px;
  border-radius: 50px;
  background: var(--grad);
  color: #05141D;
  font-weight: 700;
  letter-spacing: 0.3px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 26px rgba(33, 240, 208, 0.16);
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s, background 0.2s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(33, 240, 208, 0.22);
  filter: brightness(1.07);
}

.btn:active {
  transform: translateY(1px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border-color: rgba(33, 240, 208, 0.48);
  box-shadow: none;
}

.btn-ghost:hover {
  background: rgba(33, 240, 208, 0.09);
  box-shadow: 0 12px 26px rgba(33, 240, 208, 0.16);
  filter: none;
}

.btn-sm {
  height: 42px;
  padding: 0 22px;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  align-items: center;
  justify-content: center;
}

.menu-toggle .line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  box-shadow: 0 -6px 0 var(--cyan), 0 6px 0 var(--cyan);
}

@media (max-width: 992px) {
  .nav-main,
  .nav-login-desktop {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }
}

/* mobile drawer */
.mobile-drawer {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 20, 0.96);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  display: flex;
  flex-direction: column;
  padding: 112px 24px 32px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

body.menu-open .mobile-drawer {
  transform: translateX(0);
}

.mobile-drawer-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  color: #fff;
  font-size: 22px;
  display: grid;
  place-items: center;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-drawer-nav a {
  padding: 14px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

.mobile-drawer-nav a.active {
  color: var(--cyan);
}

.mobile-drawer .btn {
  margin-top: 28px;
}

.mobile-drawer-note {
  margin-top: 24px;
  font-size: 13px;
  color: var(--weaker);
}

/* Hero */
.hero-section {
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 150px 0 80px;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(11, 16, 27, 0.97), rgba(11, 16, 27, 0.82) 40%, rgba(11, 16, 27, 0.35)),
    linear-gradient(180deg, rgba(11, 16, 27, 0.30), rgba(11, 16, 27, 0.72) 75%, var(--bg) 100%);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
  align-items: center;
  gap: 56px;
}

@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-section {
    padding-top: 170px;
  }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(33, 240, 208, 0.08);
  border: 1px solid rgba(33, 240, 208, 0.22);
  padding: 7px 16px;
  border-radius: 40px;
  font-size: 14px;
  color: var(--cyan);
  margin-bottom: 22px;
  letter-spacing: 0.4px;
}

.hero-eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 760px;
}

.hero-title .accent {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin-top: 24px;
  max-width: 640px;
  font-size: 18px;
  color: var(--muted);
  line-height: 1.85;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-trust {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  color: var(--weaker);
  font-size: 14px;
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-trust span::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--purple);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(109, 111, 255, 0.8);
}

/* login panel */
.login-panel {
  background:
    linear-gradient(160deg, rgba(19, 28, 46, 0.92), rgba(16, 23, 40, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.50);
  position: relative;
  overflow: hidden;
}

.login-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
}

.login-panel::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: rgba(33, 240, 208, 0.10);
  filter: blur(40px);
}

.login-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.3px;
  position: relative;
  z-index: 1;
}

.login-sub {
  font-size: 14px;
  color: var(--weaker);
  margin-top: 6px;
  position: relative;
  z-index: 1;
}

.login-domain {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--cyan);
}

.login-form {
  margin-top: 24px;
  display: grid;
  gap: 15px;
  position: relative;
  z-index: 1;
}

.field label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 7px;
}

.field input {
  width: 100%;
  height: 50px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  padding: 0 15px;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  transition: border 0.2s, box-shadow 0.2s;
}

.field input::placeholder {
  color: rgba(255, 255, 255, 0.30);
}

.field input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(33, 240, 208, 0.15);
}

.login-form .btn {
  width: 100%;
  margin-top: 4px;
}

.login-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 14px;
}

.login-links a {
  color: var(--cyan);
  transition: opacity 0.2s;
}

.login-links a:hover {
  opacity: 0.78;
}

.login-help {
  margin-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--weaker);
  align-items: flex-start;
}

.login-help svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--gold);
}

/* section styles */
.section-pad {
  padding: var(--section-space) 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 38px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--cyan);
  background: rgba(33, 240, 208, 0.08);
  border-radius: 30px;
  padding: 7px 14px;
  margin-bottom: 14px;
}

.section-kicker::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  display: inline-block;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-title::before {
  content: "";
  width: 5px;
  height: 28px;
  border-radius: 4px;
  background: var(--grad-hot);
  flex-shrink: 0;
}

.section-head p {
  color: var(--muted);
  max-width: 660px;
  margin-top: 12px;
  padding-left: 19px;
}

.section-more {
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  font-weight: 500;
  font-size: 15px;
  border-bottom: 1px dashed rgba(33, 240, 208, 0.4);
  padding-bottom: 4px;
}

/* status strip */
.status-section {
  padding: 66px 0 4px;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
}

.status-item {
  padding: 28px 32px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.status-item:last-child {
  border-right: 0;
}

.status-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(33, 240, 208, 0.08);
  border: 1px solid rgba(33, 240, 208, 0.18);
  color: var(--cyan);
  flex-shrink: 0;
}

.status-item:nth-child(2) .status-icon {
  background: rgba(109, 111, 255, 0.09);
  border-color: rgba(109, 111, 255, 0.22);
  color: #B8BAFF;
}

.status-item:nth-child(3) .status-icon {
  background: rgba(255, 200, 92, 0.09);
  border-color: rgba(255, 200, 92, 0.22);
  color: var(--gold);
}

.status-text strong {
  display: block;
  font-family: var(--font-num);
  font-size: 27px;
  font-weight: 600;
  line-height: 1.2;
  color: #fff;
}

.status-text span {
  font-size: 14px;
  color: var(--muted);
}

@media (max-width: 768px) {
  .status-strip {
    grid-template-columns: 1fr;
  }

  .status-item {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .status-item:last-child {
    border-bottom: 0;
  }
}

/* scroll rail */
.rail-wrap {
  position: relative;
}

.rail-track {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 2px 24px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.rail-track::-webkit-scrollbar {
  height: 6px;
}

.rail-track::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  border-radius: 12px;
}

.rail-track::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
}

.rail-item {
  flex: 0 0 320px;
  scroll-snap-align: start;
}

.rail-card {
  position: relative;
  display: block;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 4.6;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.3s, border 0.3s, box-shadow 0.3s;
}

.rail-card:hover {
  transform: translateY(-6px);
  border-color: rgba(33, 240, 208, 0.45);
  box-shadow: var(--shadow-lg);
}

.rail-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: transform 0.5s;
}

.rail-card:hover img {
  transform: scale(1.07);
}

.rail-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 16, 27, 0.04), rgba(11, 16, 27, 0.65) 62%, rgba(11, 16, 27, 0.96));
}

.rail-card-inner {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 22px;
}

.rail-tag {
  display: inline-block;
  font-size: 12px;
  color: #DDFFF9;
  background: rgba(33, 240, 208, 0.2);
  border: 1px solid rgba(33, 240, 208, 0.32);
  border-radius: 20px;
  padding: 4px 10px;
  margin-bottom: 12px;
  backdrop-filter: blur(10px);
}

.rail-card h3 {
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
}

.rail-card p {
  color: rgba(255, 255, 255, 0.75);
  margin-top: 7px;
  font-size: 14px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rail-arrow {
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  justify-content: center;
  align-items: center;
  color: #fff;
  transition: all 0.2s;
}

.rail-arrow:hover {
  background: rgba(33, 240, 208, 0.12);
  border-color: var(--cyan);
  color: var(--cyan);
}

.rail-controls {
  display: flex;
  gap: 10px;
}

/* feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 22px;
}

.feature-card {
  position: relative;
  display: block;
  min-height: 320px;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow);
}

.feature-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: transform 0.55s;
}

.feature-card:hover img {
  transform: scale(1.06);
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(190deg, rgba(11, 16, 27, 0.02) 8%, rgba(11, 16, 27, 0.72) 70%, rgba(11, 16, 27, 0.96));
}

.feature-card-content {
  position: absolute;
  z-index: 3;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px;
}

.feature-card .eyebrow-tag {
  display: inline-block;
  background: rgba(33, 240, 208, 0.15);
  color: var(--cyan);
  border: 1px solid rgba(33, 240, 208, 0.25);
  padding: 5px 12px;
  border-radius: 30px;
  font-size: 12px;
  margin-bottom: 14px;
}

.feature-card h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.4;
  max-width: 600px;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.75);
  margin-top: 10px;
  max-width: 580px;
  font-size: 15px;
}

.feature-flex {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.feature-card-mini {
  min-height: 185px;
}

.feature-card-mini h3 {
  font-size: 19px;
}

.feature-card-mini p {
  font-size: 14px;
  margin-top: 7px;
}

@media (max-width: 992px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 300px;
  }
}

/* topic / special area */
.topic-panel {
  background: linear-gradient(150deg, rgba(19, 28, 46, 0.55), rgba(10, 15, 26, 0.72));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 28px;
  padding: 42px;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 44px;
  overflow: hidden;
  position: relative;
}

.topic-panel::after {
  content: "";
  position: absolute;
  right: -180px;
  top: -180px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(109, 111, 255, 0.14), transparent 70%);
  pointer-events: none;
}

.topic-index .topic-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.topic-index > p {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 15px;
}

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 16px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.2s, border 0.2s;
}

.topic-item:hover,
.topic-item.active {
  background: rgba(33, 240, 208, 0.07);
  border-color: rgba(33, 240, 208, 0.24);
}

.topic-index-num {
  font-family: var(--font-num);
  color: var(--cyan);
  font-size: 18px;
  width: 30px;
  line-height: 1.4;
}

.topic-item strong {
  display: block;
  font-size: 16px;
  color: #fff;
}

.topic-item span {
  display: block;
  color: var(--weaker);
  font-size: 13px;
  line-height: 1.5;
  margin-top: 3px;
}

.topic-feature {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  min-height: 360px;
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42);
}

.topic-feature img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.topic-feature::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(11, 16, 27, 0.4), rgba(8, 12, 20, 0.18)), linear-gradient(0deg, rgba(8, 12, 20, 0.94), transparent 70%);
}

.topic-feature-content {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px;
}

.topic-feature-content .eyebrow-tag {
  color: var(--gold);
  background: rgba(255, 200, 92, 0.1);
  border: 1px solid rgba(255, 200, 92, 0.2);
  display: inline-block;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  margin-bottom: 12px;
}

.topic-feature-content h3 {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
}

.topic-feature-content p {
  color: rgba(255, 255, 255, 0.72);
  margin-top: 10px;
  font-size: 15px;
  max-width: 500px;
}

.topic-feature-content .link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fff;
  margin-top: 16px;
  font-weight: 600;
  font-size: 15px;
}

.topic-feature-content .link-arrow:hover {
  color: var(--cyan);
}

@media (max-width: 992px) {
  .topic-panel {
    grid-template-columns: 1fr;
    padding: 26px;
  }

  .topic-feature {
    min-height: 320px;
  }
}

/* cms section */
.cms-section {
  position: relative;
}

.cms-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 40px;
}

.cms-feed {
  display: flex;
  flex-direction: column;
}

.cms-item {
  display: grid;
  grid-template-columns: 94px 1fr;
  gap: 22px;
  padding: 22px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  transition: background 0.2s;
}

.cms-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 4px;
  background: var(--magenta);
  opacity: 0;
  transition: opacity 0.2s;
}

.cms-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.cms-item:hover::before {
  opacity: 0.9;
}

.cms-date {
  color: var(--weaker);
  font-family: var(--font-num);
  font-size: 14px;
  line-height: 1.4;
  padding-top: 4px;
}

.cms-date strong {
  display: block;
  font-size: 26px;
  color: rgba(255, 255, 255, 0.8);
}

.cms-content {
  min-width: 0;
}

.cms-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 6px;
}

.cms-cat {
  display: inline-block;
  background: rgba(109, 111, 255, 0.14);
  border: 1px solid rgba(109, 111, 255, 0.25);
  color: #C8C9FF;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
}

.cms-title {
  font-size: 20px;
  line-height: 1.45;
  color: #fff;
  transition: color 0.2s;
  display: inline-block;
}

.cms-title:hover {
  color: var(--cyan);
}

.cms-summary {
  color: var(--muted);
  margin-top: 8px;
  max-width: 780px;
  font-size: 15px;
  line-height: 1.7;
}

.cms-item-time {
  display: inline-block !important;
  margin-top: 6px;
  font-size: 13px;
  color: var(--weaker);
}

.cms-empty {
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 30px;
  color: var(--muted);
  font-size: 18px;
  min-height: 260px;
}

.cms-side-card {
  position: sticky;
  top: 120px;
  border-radius: 20px;
  padding: 28px;
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(33, 240, 208, 0.09), transparent 60%),
    rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(33, 240, 208, 0.2);
}

.cms-side-card-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(33, 240, 208, 0.1);
  color: var(--cyan);
  margin-bottom: 18px;
}

.cms-side-card h3 {
  font-size: 22px;
  color: #fff;
  line-height: 1.4;
  font-weight: 800;
}

.cms-side-card p {
  color: var(--muted);
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.7;
}

.cms-side-card .btn {
  margin-top: 22px;
}

@media (max-width: 992px) {
  .cms-layout {
    grid-template-columns: 1fr;
  }

  .cms-side-card {
    position: relative;
    top: auto;
  }

  .cms-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .cms-item-time {
    margin-top: 0;
  }
}

/* CTA */
.cta-outer {
  padding: 10px 0 var(--section-space);
}

.cta-panel {
  position: relative;
  border-radius: 30px;
  overflow: hidden;
  padding: 56px 64px;
  display: grid;
  grid-template-columns: 1.2fr auto;
  align-items: center;
  gap: 36px;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(33, 240, 208, 0.25);
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(9, 14, 26, 0.96), rgba(10, 16, 30, 0.82)),
    radial-gradient(90% 140% at 80% 20%, rgba(33, 240, 208, 0.15), transparent 60%);
}

.cta-panel > * {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.35;
  color: #fff;
}

.cta-panel p {
  color: rgba(255, 255, 255, 0.7);
  margin-top: 14px;
  max-width: 720px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 1200px) {
  .cta-panel {
    grid-template-columns: 1fr;
    padding: 40px 30px;
  }
}

/* faq */
.faq-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 60px;
}

.faq-intro h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.35;
  font-weight: 800;
  color: #fff;
}

.faq-intro p {
  color: var(--muted);
  margin-top: 18px;
  font-size: 16px;
}

.faq-intro .btn {
  margin-top: 26px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.035);
  border-radius: 16px;
  overflow: hidden;
  transition: border 0.2s;
}

.faq-item.active {
  border-color: rgba(33, 240, 208, 0.35);
}

.faq-q {
  width: 100%;
  min-height: 64px;
  padding: 16px 18px 16px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.faq-q:hover {
  color: var(--cyan);
}

.faq-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--cyan);
  font-weight: 400;
  font-size: 20px;
  transition: transform 0.25s, background 0.25s, border 0.25s;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(33, 240, 208, 0.1);
  border-color: var(--cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 48px 20px 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  padding-top: 14px;
}

@media (max-width: 992px) {
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 38px;
  }
}

/* footer */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, transparent, rgba(16, 23, 40, 0.6)),
    var(--bg-deep);
  color: var(--muted);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 46px;
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 22px;
  font-weight: 800;
}

.footer-brand-name .brand-mini {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--grad-hot);
  display: grid;
  place-items: center;
  color: #031018;
  font-weight: 800;
  font-size: 14px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 15px;
  max-width: 360px;
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 15px;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 1px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-col a {
  color: var(--muted);
  font-size: 15px;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-col a:hover {
  color: var(--cyan);
  padding-left: 5px;
}

.footer-techline {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 20px 0;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: var(--weaker);
}

.footer-bottom .official-domain {
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a {
  color: var(--weaker);
}

.footer-bottom a:hover {
  color: var(--cyan);
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}

/* back to top */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(16, 23, 40, 0.9);
  border: 1px solid rgba(33, 240, 208, 0.45);
  display: grid;
  place-items: center;
  z-index: 90;
  color: var(--cyan);
  transform: translateY(70px);
  transition: transform 0.3s, background 0.2s;
}

.back-top.show {
  transform: translateY(0);
}

.back-top:hover {
  background: var(--cyan);
  color: #07121A;
}

/* roulang page: article */
:root {
  --bg: #0B101B;
  --surface: #101728;
  --surface2: #131C2E;
  --card: #121C30;
  --neon: #21F0D0;
  --violet: #6D6FFF;
  --pink: #FF3D77;
  --gold: #FFC85C;
  --white: #FFFFFF;
  --text: rgba(255, 255, 255, 0.94);
  --text-sec: rgba(255, 255, 255, 0.72);
  --text-muted: rgba(255, 255, 255, 0.48);
  --border: rgba(255, 255, 255, 0.09);
  --border-bright: rgba(33, 240, 208, 0.45);
  --grad-main: linear-gradient(135deg, #21F0D0 0%, #6D6FFF 100%);
  --grad-hot: linear-gradient(135deg, #6D6FFF 0%, #FF3D77 100%);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.32);
  --shadow-neon: 0 0 24px rgba(33, 240, 208, 0.22);
  --container: 1440px;
  --gutter: 24px;
  --font: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

a:hover {
  color: var(--neon);
}

img {
  max-width: 100%;
  display: block;
}

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font: inherit;
  border: 0;
  outline: 0;
  color: inherit;
  background: transparent;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section-space {
  padding: 84px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--neon);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  background: rgba(33, 240, 208, 0.10);
  border: 1px solid rgba(33, 240, 208, 0.18);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--grad-main);
  border-radius: 2px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 50px;
  padding: 0 28px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  border-radius: 12px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--grad-main);
  color: #061018;
  border: 0;
  box-shadow: 0 8px 22px rgba(33, 240, 208, 0.14), 0 2px 8px rgba(109, 111, 255, 0.20);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(33, 240, 208, 0.24), 0 4px 16px rgba(109, 111, 255, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px rgba(33, 240, 208, 0.16);
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(33, 240, 208, 0.55);
  color: var(--neon);
}

.btn-ghost:hover {
  background: rgba(33, 240, 208, 0.10);
  border-color: var(--neon);
  box-shadow: 0 0 18px rgba(33, 240, 208, 0.28);
  transform: translateY(-1px);
}

.btn-ghost:active {
  transform: translateY(0);
}

.btn-pink {
  background: var(--grad-hot);
  color: #fff;
  border: 0;
  box-shadow: 0 8px 24px rgba(255, 61, 119, 0.18);
}

.btn-pink:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 61, 119, 0.30);
}

/* ===== Header ===== */
.site-header {
  position: relative;
  z-index: 100;
  background: rgba(10, 15, 26, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(33, 240, 208, 0.9), rgba(109, 111, 255, 0.7), transparent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 30px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 1200;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #21F0D0 0%, #6D6FFF 100%);
  color: #0A111E;
  font-size: 18px;
  font-weight: 800;
  border-radius: 14px;
  letter-spacing: -0.02em;
  box-shadow: 0 0 20px rgba(33, 240, 208, 0.35);
}

.brand-txt {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
}

.brand-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.brand-meta .official {
  background: rgba(255, 200, 92, 0.12);
  color: var(--gold);
  font-size: 10px;
  border: 1px solid rgba(255, 200, 92, 0.35);
  border-radius: 4px;
  padding: 1px 6px;
  line-height: 1.4;
}

.nav-main {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-link {
  position: relative;
  font-size: 16px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  padding: 10px 2px;
  letter-spacing: 0.01em;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30%;
  height: 2px;
  background: var(--grad-main);
  border-radius: 4px;
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: left;
  transition: all 0.3s ease;
  box-shadow: 0 0 14px rgba(33, 240, 208, 0.55);
}

.nav-link:hover {
  color: #fff;
  text-shadow: 0 0 14px rgba(33, 240, 208, 0.4);
}

.nav-link:hover::after,
.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
  width: 100%;
}

.nav-link.active {
  color: #fff;
  text-shadow: 0 0 12px rgba(33, 240, 208, 0.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 1201;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: all 0.3s ease;
}

.menu-toggle .line {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
  transition: all 0.3s ease;
}

.menu-toggle:hover {
  border-color: var(--border-bright);
  box-shadow: 0 0 14px rgba(33, 240, 208, 0.18);
}

/* ===== Article Page Hero ===== */
.post-hero {
  position: relative;
  background-color: #0c1322;
  background-image: linear-gradient(180deg, rgba(11, 16, 27, 0.20) 0%, rgba(11, 16, 27, 0.12) 30%, rgba(11, 16, 27, 0.92) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.post-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 16, 27, 0.78) 0%, rgba(11, 16, 27, 0.30) 60%, rgba(19, 28, 46, 0.45) 100%);
  pointer-events: none;
}

.post-hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 58px;
  padding-bottom: 46px;
  max-width: 1180px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sec);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.62);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--neon);
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.28);
}

.breadcrumb .current {
  color: var(--neon);
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(33, 240, 208, 0.08);
  border: 1px solid rgba(33, 240, 208, 0.24);
  color: var(--neon);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: 0.06em;
}

.post-hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.25;
  font-weight: 800;
  color: #fff;
  max-width: 960px;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}

.post-lead {
  max-width: 800px;
  font-size: 17px;
  color: var(--text-sec);
  line-height: 1.85;
  margin-bottom: 28px;
}

.post-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  color: var(--text-sec);
  font-size: 14px;
}

.post-hero-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.post-hero-meta .m-label {
  color: var(--text-muted);
  font-size: 13px;
}

.post-hero-meta .m-val {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--violet);
}

/* ===== Article Body Layout ===== */
.article-margin {
  padding: 72px 0 96px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 48px;
  align-items: start;
}

.main-column {
  min-width: 0;
}

.side-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 110px;
}

/* article inner */
.article-content-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 4vw, 44px);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.article-content-wrap::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 4px;
  width: 100%;
  background: linear-gradient(90deg, var(--neon), var(--violet) 55%, var(--pink));
  opacity: 0.8;
}

.article-copy {
  font-size: 16px;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.86);
}

.article-copy h2 {
  font-size: 24px;
  line-height: 1.45;
  color: #fff;
  font-weight: 700;
  margin: 44px 0 18px;
  padding-top: 24px;
  position: relative;
  letter-spacing: -0.02em;
}

.article-copy h2::before {
  content: "";
  display: block;
  width: 42px;
  height: 4px;
  background: linear-gradient(90deg, var(--neon), var(--violet));
  border-radius: 8px;
  margin-bottom: 18px;
}

.article-copy h3 {
  font-size: 20px;
  color: #fff;
  font-weight: 700;
  line-height: 1.5;
  margin: 32px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--violet);
}

.article-copy h4 {
  font-size: 18px;
  color: #fff;
  font-weight: 600;
  margin: 24px 0 10px;
}

.article-copy p {
  margin-bottom: 20px;
}

.article-copy strong {
  color: #fff;
  font-weight: 700;
}

.article-copy a {
  color: var(--neon);
  border-bottom: 1px dashed rgba(33, 240, 208, 0.6);
  padding-bottom: 1px;
}

.article-copy a:hover {
  border-bottom-style: solid;
  text-shadow: 0 0 12px rgba(33, 240, 208, 0.28);
}

.article-copy ul,
.article-copy ol {
  margin: 18px 0 24px;
  padding-left: 22px;
}

.article-copy ul li {
  list-style: none;
  position: relative;
  margin-bottom: 10px;
  padding-left: 14px;
}

.article-copy ul li::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad-main);
  box-shadow: 0 0 8px rgba(33, 240, 208, 0.5);
}

.article-copy ol li {
  list-style: decimal;
  margin-bottom: 10px;
  padding-left: 4px;
}

.article-copy blockquote {
  background: rgba(255, 255, 255, 0.04);
  border-left: 4px solid var(--neon);
  border-radius: 0 14px 14px 0;
  padding: 20px 24px;
  margin: 26px 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 17px;
  line-height: 1.9;
}

.article-copy blockquote p {
  margin-bottom: 0;
}

.article-copy img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin: 28px 0;
}

.article-copy table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  font-size: 15px;
}

.article-copy th {
  text-align: left;
  color: #fff;
  font-weight: 600;
  background: rgba(33, 240, 208, 0.08);
}

.article-copy th,
.article-copy td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
}

.article-copy tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.article-copy code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.92em;
}

.article-copy pre {
  background: #0b0e1a;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  overflow-x: auto;
  margin: 26px 0;
  line-height: 1.7;
}

.article-copy pre code {
  background: transparent;
  padding: 0;
}

.post-tail-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.tail-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-sec);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 4px;
  transition: all 0.25s;
}

.tail-link i {
  font-style: normal;
  color: var(--neon);
  font-size: 20px;
  line-height: 1;
}

.tail-link:hover {
  color: var(--neon);
  transform: translateX(2px);
}

/* ===== Article empty state ===== */
.empty-card {
  background: var(--surface);
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 84px 32px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  border: 1px solid var(--border-bright);
  background: rgba(33, 240, 208, 0.06);
  color: var(--neon);
  font-size: 32px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 24px rgba(33, 240, 208, 0.14);
}

.empty-card h1 {
  font-size: 28px;
  color: #fff;
  margin-bottom: 12px;
}

.empty-card p {
  color: var(--text-sec);
  margin-bottom: 26px;
}

.empty-card .btn {
  min-width: 150px;
}

/* ===== Sidebar ===== */
.side-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.side-card:hover {
  border-color: rgba(33, 240, 208, 0.28);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.35), 0 0 22px rgba(33, 240, 208, 0.08);
}

.side-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.side-title::before {
  content: "";
  width: 4px;
  height: 16px;
  border-radius: 4px;
  background: var(--grad-main);
}

.side-nav-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.side-nav-list a {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--text-sec);
  font-size: 15px;
  transition: all 0.25s;
}

.side-nav-list a:hover {
  background: rgba(33, 240, 208, 0.08);
  color: var(--neon);
  transform: translateX(3px);
}

.side-nav-list a span:last-child {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
}

.side-entry-text {
  color: var(--text-sec);
  font-size: 14px;
  line-height: 1.85;
  margin-bottom: 18px;
}

.origin-domain {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 200, 92, 0.06);
  border: 1px solid rgba(255, 200, 92, 0.25);
  border-radius: 10px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.side-entry-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.side-call-text {
  color: var(--text-sec);
  font-size: 14px;
  line-height: 1.85;
  margin-bottom: 16px;
}

.side-hot .hot-item {
  display: block;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.10);
  transition: all 0.25s;
}

.side-hot .hot-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.side-hot .hot-item:hover {
  padding-left: 6px;
}

.side-hot .hot-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  border-radius: 6px;
  background: rgba(255, 200, 92, 0.12);
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  margin-right: 10px;
  font-family: "Rajdhani", "DIN Alternate", sans-serif;
}

.side-hot .hot-title {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 500;
  line-height: 1.6;
}

.side-hot .hot-item:hover .hot-title {
  color: var(--neon);
}

.side-hot .hot-area {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  padding-left: 32px;
  color: var(--text-muted);
  font-size: 13px;
}

.side-badge-note {
  margin-bottom: 14px;
}

.side-side-list {
  padding: 0;
}

/* ===== Related section ===== */
.related-section {
  background: linear-gradient(180deg, transparent, rgba(16, 23, 40, 0.65), transparent);
  padding: 72px 0;
  margin-top: 30px;
}

.related-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 30px;
}

.related-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: #fff;
  font-weight: 800;
}

.related-head p {
  color: var(--text-muted);
  font-size: 15px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.related-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  height: 100%;
}

.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(33, 240, 208, 0.36);
  box-shadow: var(--shadow-lg), 0 0 26px rgba(33, 240, 208, 0.10);
}

.related-cover {
  position: relative;
  height: 176px;
  overflow: hidden;
  background: #152038;
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.related-card:hover .related-cover img {
  transform: scale(1.08);
}

.related-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(11, 16, 27, 0.85));
}

.related-tag {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  padding: 4px 10px;
  background: rgba(33, 240, 208, 0.88);
  border-radius: 8px;
  color: #08121b;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.related-info {
  padding: 20px;
}

.related-info h3 {
  font-size: 17px;
  color: #fff;
  font-weight: 700;
  line-height: 1.65;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.related-card:hover .related-info h3 {
  color: var(--neon);
}

.related-info p {
  color: var(--text-sec);
  font-size: 14px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-info .meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

.meta-row .go-arrow {
  font-size: 18px;
  color: var(--neon);
}

/* ===== CTA band ===== */
.cta-band {
  padding: 68px 0;
}

.cta-inner {
  position: relative;
  background: linear-gradient(120deg, rgba(33, 240, 208, 0.16), rgba(109, 111, 255, 0.13), rgba(19, 28, 46, 0.6)), #0E1626;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  overflow: hidden;
  padding: clamp(32px, 5vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  box-shadow: var(--shadow-lg);
}

.cta-inner::before {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(109, 111, 255, 0.28), transparent 70%);
  right: -120px;
  top: -160px;
  pointer-events: none;
}

.cta-inner::after {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(33, 240, 208, 0.32);
  left: 40%;
  bottom: -110px;
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.cta-content h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  color: #fff;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-content p {
  color: var(--text-sec);
  font-size: 16px;
  line-height: 1.9;
}

.cta-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.cta-actions .btn {
  min-width: 150px;
}

.cta-domain-note {
  position: relative;
  z-index: 2;
  display: block;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.54);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.cta-domain-note code {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  padding: 1px 8px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
}

/* ===== Footer ===== */
.site-footer {
  background: #070C15;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.brand-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--neon), var(--violet));
  color: #0A111E;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 800;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.95;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-sec);
  font-size: 14px;
  position: relative;
  padding-bottom: 2px;
  transition: all 0.25s;
}

.footer-col a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--neon);
  transition: width 0.25s;
}

.footer-col a:hover {
  color: var(--neon);
  padding-left: 3px;
}

.footer-col a:hover::after {
  width: 100%;
}

.footer-techline {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 0;
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
}

.site-footer .footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

.site-footer .footer-bottom a:hover {
  color: var(--neon);
}

/* ===== Back top ===== */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 200;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(18, 28, 48, 0.90);
  border: 1px solid rgba(33, 240, 208, 0.42);
  color: var(--neon);
  font-size: 22px;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
  transition: all 0.3s;
}

.back-top:hover {
  background: rgba(33, 240, 208, 0.14);
  border-color: var(--neon);
  box-shadow: 0 0 24px rgba(33, 240, 208, 0.30);
  transform: translateY(-3px);
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .content-grid {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 30px;
  }
  .related-grid {
    gap: 18px;
  }
}

@media (max-width: 992px) {
  .nav-main {
    position: fixed;
    inset: 0;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    background: rgba(9, 13, 24, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    opacity: 0;
    visibility: hidden;
    transform: scale(1.03);
    transition: all 0.4s ease;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .menu-init-open .nav-main,
  .site-header.menu-open .nav-main {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
  }

  .site-header.menu-open .nav-link {
    font-size: 24px;
    font-weight: 700;
    opacity: 0;
    animation: fadeUpNav 0.45s ease forwards;
  }

  .site-header.menu-open .nav-link:nth-child(1) { animation-delay: 0.08s; }
  .site-header.menu-open .nav-link:nth-child(2) { animation-delay: 0.15s; }
  .site-header.menu-open .nav-link:nth-child(3) { animation-delay: 0.22s; }
  .site-header.menu-open .nav-link:nth-child(4) { animation-delay: 0.29s; }

  @keyframes fadeUpNav {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .site-header.menu-open .menu-toggle .line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .site-header.menu-open .menu-toggle .line:nth-child(2) {
    opacity: 0;
  }

  .nav-login-desktop {
    display: none;
  }

  .nav-mobile-login {
    display: block;
    margin-top: 20px;
  }

  .content-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .side-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    position: static;
  }

  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --gutter: 16px;
  }

  .brand {
    gap: 8px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    font-size: 16px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-meta {
    display: none;
  }

  .header-inner {
    height: 68px;
  }

  .post-hero-inner {
    padding-top: 46px;
    padding-bottom: 36px;
  }

  .post-hero h1 {
    font-size: 1.8rem;
  }

  .post-lead {
    font-size: 16px;
  }

  .article-margin {
    padding: 48px 0;
  }

  .article-content-wrap {
    padding: 25px 20px;
    border-radius: 18px;
  }

  .article-copy {
    font-size: 16px;
  }

  .article-copy h2 {
    font-size: 21px;
  }

  .article-copy h3 {
    font-size: 18px;
  }

  .post-hero-meta {
    gap: 8px 14px;
  }

  .related-section {
    padding: 56px 0;
  }

  .related-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .related-cover {
    height: 200px;
  }

  .card-cta {
    padding: 30px 22px;
  }

  .cta-inner {
    padding: 26px 20px;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .side-column {
    grid-template-columns: 1fr;
  }

  .post-tail-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .post-tail-nav .tail-link:last-child {
    align-self: flex-end;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 15px;
  }

  .btn {
    height: 46px;
    font-size: 15px;
  }

  .brand-mini {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  .site-header.menu-open .nav-link {
    font-size: 20px;
  }

  .post-hero h1 {
    font-size: 1.55rem;
    letter-spacing: -0.02em;
  }

  .breadcrumb {
    font-size: 13px;
  }

  .article-copy {
    line-height: 1.9;
  }

  .article-copy th,
  .article-copy td {
    padding: 10px;
    font-size: 13px;
  }

  .article-copy .article-content-wrap {
    padding: 20px 16px;
  }

  .important-note {
    padding: 20px 18px;
  }

  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .side-card {
    padding: 20px;
  }
}

@media (min-width: 993px) {
  .nav-mobile-login {
    display: none;
  }
}

/* roulang page: category1 */
:root{
  --bg:#0B101B;
  --bg-2:#0E1524;
  --panel:#101728;
  --panel-2:#131C2E;
  --card:#121C30;
  --card-soft:rgba(255,255,255,0.04);
  --line:rgba(255,255,255,0.09);
  --line-bright:rgba(255,255,255,0.16);
  --cyan:#21F0D0;
  --blue:#6D6FFF;
  --pink:#FF3D77;
  --gold:#FFC85C;
  --text:#F5F8FF;
  --text-soft:rgba(255,255,255,0.72);
  --text-dim:rgba(255,255,255,0.48);
  --radius-xl:24px;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 12px 30px rgba(0,0,0,0.30);
  --shadow-hover:0 20px 50px rgba(0,0,0,0.45);
  --gradient:linear-gradient(135deg,#21F0D0 0%,#6D6FFF 100%);
  --gradient-pink:linear-gradient(135deg,#6D6FFF,#FF3D77);
  --max:1440px;
  --space:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
ul,ol{list-style:none}
details summary{list-style:none}
details summary::-webkit-details-marker{display:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:4px;
  border-radius:6px;
}
.container{
  width:min(100% - 48px,var(--max));
  margin-inline:auto;
}
section{
  scroll-margin-top:96px;
}
/* utilities */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:14px 28px;
  border:none;
  border-radius:999px;
  font-size:16px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,opacity .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--gradient);
  color:#fff;
  box-shadow:0 8px 24px rgba(33,240,208,.16);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 36px rgba(33,240,208,.28);
}
.btn-primary:active{transform:translateY(0)}
.btn-outline{
  background:rgba(255,255,255,.04);
  color:var(--text);
  border:1px solid rgba(33,240,208,.55);
}
.btn-outline:hover{
  background:rgba(33,240,208,.08);
  border-color:var(--cyan);
  box-shadow:0 0 20px rgba(33,240,208,.22);
  color:#fff;
  transform:translateY(-2px);
}
.btn-outline:active{transform:translateY(0)}
.btn-light{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  color:#fff;
}
.btn-light:hover{
  background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.3);
  box-shadow:0 12px 28px rgba(0,0,0,.3);
  transform:translateY(-2px);
}
.btn-sm{min-height:40px;padding:10px 18px;font-size:14px}
.btn-arrow svg{width:18px;height:18px;flex:none}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(33,240,208,.10);
  color:var(--cyan);
  border:1px solid rgba(33,240,208,.25);
  font-size:13px;
  font-weight:500;
  line-height:1;
}
.badge-blue{
  background:rgba(109,111,255,.12);
  color:#BFC2FF;
  border-color:rgba(109,111,255,.30);
}
.badge-gold{
  background:rgba(255,200,92,.10);
  color:var(--gold);
  border-color:rgba(255,200,92,.28);
}
.badge-pure{
  background:transparent;
  color:var(--gold);
  border-color:rgba(255,200,92,.32);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--cyan);
  letter-spacing:.05em;
  font-size:14px;
  font-weight:600;
}
.eyebrow::before{
  content:"";
  width:24px;
  height:2px;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(33,240,208,.6);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:40px;
}
.section-title-wrap{
  display:flex;
  gap:16px;
  align-items:flex-start;
}
.section-deco{
  width:5px;
  height:50px;
  flex:none;
  border-radius:8px;
  background:linear-gradient(180deg,var(--cyan),var(--blue));
  box-shadow:0 0 16px rgba(33,240,208,.25);
  margin-top:6px;
}
.section-kicker{
  color:var(--cyan);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  margin-bottom:6px;
}
.site-title{
  font-size:clamp(1.5rem,3vw,2.2rem);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--text-soft);
  font-size:14px;
  transition:color .2s ease;
}
.link-more:hover{color:var(--cyan)}
.link-more svg{width:16px;height:16px;transition:transform .2s}
.link-more:hover svg{transform:translateX(4px)}
/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(11,16,27,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:none;
}
.brand-mark{
  display:flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  border-radius:14px;
  background:linear-gradient(135deg,#21F0D0,#6D6FFF);
  color:#07121C;
  font-weight:800;
  font-size:15px;
  letter-spacing:-.01em;
  box-shadow:0 0 22px rgba(33,240,208,.24);
}
.brand-txt{
  display:flex;
  flex-direction:column;
  justify-content:center;
  line-height:1.15;
  min-width:0;
}
.brand-name{
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-meta{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--text-dim);
  line-height:1.2;
  margin-top:4px;
}
.brand-meta .official{
  color:var(--gold);
  border:1px solid rgba(255,200,92,.3);
  border-radius:5px;
  padding:0 6px;
  line-height:1.4;
  font-weight:500;
}
.nav-main{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
  margin-right:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  color:var(--text-soft);
  font-size:16px;
  font-weight:500;
  padding:10px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  bottom:2px;
  left:0;
  height:2px;
  width:24%;
  min-width:18px;
  background:var(--gradient);
  border-radius:3px;
  box-shadow:0 0 12px rgba(33,240,208,.6);
  opacity:0;
  transition:width .28s ease,opacity .25s ease;
}
.nav-link:hover{
  color:#fff;
}
.nav-link:hover::after{
  opacity:.9;
  width:70%;
}
.nav-link.active{
  color:#fff;
  text-shadow:0 0 16px rgba(33,240,208,.18);
}
.nav-link.active::after{
  opacity:1;
  width:100%;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}
.nav-login-desktop{
  background:var(--gradient);
  color:#fff;
  box-shadow:0 6px 20px rgba(33,240,208,.24);
}
.nav-login-desktop:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 30px rgba(109,111,255,.3);
}
.menu-toggle{
  display:none;
  width:46px;
  height:46px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.menu-toggle .line{
  position:relative;
  width:20px;
  height:2px;
  background:var(--cyan);
  border-radius:2px;
}
.menu-toggle .line::before,.menu-toggle .line::after{
  content:"";
  position:absolute;
  left:0;
  width:20px;
  height:2px;
  background:var(--cyan);
  border-radius:2px;
  transition:transform .25s ease;
}
.menu-toggle .line::before{top:-6px}
.menu-toggle .line::after{top:6px}
.site-header.menu-open .menu-toggle .line{
  background:transparent;
}
.site-header.menu-open .menu-toggle .line::before{
  transform:translateY(6px) rotate(45deg);
}
.site-header.menu-open .menu-toggle .line::after{
  transform:translateY(-6px) rotate(-45deg);
}
/* cat hero */
.cat-hero{
  position:relative;
  min-height:420px;
  display:flex;
  align-items:center;
  padding:56px 0;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(11,16,27,.88),rgba(16,23,40,.72));
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url("/assets/images/backpic/back-1.webp") center 28%/cover no-repeat;
  opacity:.7;
  z-index:-2;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(90deg,#0B101B 12%,rgba(11,16,27,.82) 42%,rgba(11,16,27,.32) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
  width:min(100% - 48px,var(--max));
  margin-inline:auto;
}
.cat-hero h1{
  font-size:clamp(2rem,4.6vw,3.4rem);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.02em;
  margin-top:18px;
  margin-bottom:18px;
}
.h1-highlight{
  background:linear-gradient(100deg,var(--cyan) 10%,var(--blue));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero .lead{
  max-width:620px;
  font-size:clamp(15px,1.5vw,18px);
  color:var(--text-soft);
  line-height:1.9;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:16px 20px;
  margin-top:24px;
  color:var(--text-dim);
  font-size:13px;
}
.hero-trust li{
  position:relative;
  padding-left:16px;
}
.hero-trust li::before{
  content:"";
  position:absolute;
  left:0;
  top:.55em;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 8px rgba(33,240,208,.7);
}
.hero-panel{
  background:linear-gradient(150deg,rgba(16,23,40,.88),rgba(18,28,48,.82));
  border:1px solid rgba(33,240,208,.24);
  border-radius:24px;
  padding:24px;
  backdrop-filter:blur(8px);
  box-shadow:0 20px 60px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.06);
  position:relative;
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset:-1px;
  border-radius:25px;
  padding:1px;
  background:linear-gradient(130deg,rgba(33,240,208,.5),transparent 24%,rgba(109,111,255,.2));
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
}
.panel-title{
  font-weight:700;
  font-size:18px;
  display:flex;
  align-items:center;
  gap:8px;
}
.panel-title .dot{
  width:10px;
  height:10px;
  flex:none;
  border-radius:3px;
  background:var(--gradient);
}
.panel-sub{
  font-size:14px;
  color:var(--text-soft);
  margin-top:8px;
}
.panel-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:16px 0 18px;
}
.panel-tags span{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.03);
  font-size:12px;
  color:var(--text-soft);
}
.hero-stat-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  border-top:1px dashed rgba(255,255,255,.12);
  padding-top:18px;
  margin-top:18px;
}
.hero-stat{
  text-align:center;
}
.hero-stat strong{
  display:block;
  font-family:"Barlow Condensed","DIN Alternate","Rajdhani",sans-serif;
  font-size:26px;
  line-height:1.1;
  color:var(--cyan);
  font-weight:600;
  letter-spacing:.02em;
}
.hero-stat strong.gold{color:var(--gold)}
.hero-stat span{
  display:block;
  margin-top:4px;
  font-size:12px;
  color:var(--text-dim);
}
/* breadcrumb strip */
.crumb-border{
  border-bottom:1px solid var(--line);
  background:rgba(16,23,40,.5);
}
.crumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  min-height:48px;
  flex-wrap:wrap;
  color:var(--text-dim);
}
.crumb a{
  color:var(--text-soft);
  transition:color .2s;
}
.crumb a:hover{color:var(--cyan)}
.crumb i{
  font-style:normal;
  color:var(--text-dim);
  opacity:.5;
}
.crumb .current{color:var(--cyan)}
/* service intro cards */
.pad-section{
  padding-block:var(--space);
}
.svc-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  margin-top:40px;
}
.svc-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 22px;
  position:relative;
  transition:transform .25s,border-color .25s,background .25s;
}
.svc-card:hover{
  transform:translateY(-5px);
  border-color:rgba(33,240,208,.35);
  background:var(--panel-2);
}
.svc-icon{
  width:48px;
  height:48px;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(33,240,208,.16),rgba(109,111,255,.16));
  border:1px solid rgba(33,240,208,.18);
  display:flex;
  align-items:center;
  justify-content:center;
}
.svc-icon svg{
  width:24px;
  height:24px;
  stroke:var(--cyan);
}
.svc-card h3{
  font-size:18px;
  margin-top:18px;
  margin-bottom:8px;
  letter-spacing:-.01em;
}
.svc-card p{
  font-size:14px;
  color:var(--text-soft);
  line-height:1.75;
}
.svc-card .num{
  position:absolute;
  top:20px;
  right:22px;
  font-family:"Barlow Condensed","Rajdhani",sans-serif;
  font-size:36px;
  font-weight:600;
  color:rgba(255,255,255,.06);
  line-height:1;
}
/* step guide */
.game-section{
  background:
      linear-gradient(180deg,rgba(13,18,31,.92),rgba(18,24,44,.96)),
      url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-block:1px solid rgba(255,255,255,.07);
  padding-block:calc(var(--space) + 12px);
}
.steps-wrap{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  position:relative;
  gap:18px;
  margin-top:42px;
}
.step-item{
  background:rgba(13,20,33,.78);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 20px;
  position:relative;
  min-height:218px;
  backdrop-filter:blur(6px);
  transition:border-color .25s,transform .25s;
}
.step-item:hover{
  border-color:rgba(109,111,255,.35);
  transform:translateY(-3px);
}
.step-num{
  width:42px;
  height:42px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:"DIN Alternate","Rajdhani",sans-serif;
  font-size:20px;
  font-weight:700;
  background:var(--gradient);
  color:#101728;
  box-shadow:0 0 20px rgba(33,240,208,.22);
}
.step-item.gold .step-num{
  background:#FFC85C;
  color:#101728;
  box-shadow:0 0 20px rgba(255,200,92,.2);
}
.step-item h3{
  margin-top:20px;
  font-size:18px;
}
.step-item p{
  margin-top:8px;
  font-size:14px;
  color:var(--text-soft);
}
.step-line{
  position:absolute;
  top:90px;
  right:-14px;
  width:60px;
  height:1px;
  background:linear-gradient(90deg,rgba(33,240,208,.35),rgba(33,240,208,.04));
  display:none;
}
/* content guide split */
.guide-split{
  display:grid;
  grid-template-columns:minmax(320px,.94fr) 1.06fr;
  gap:48px;
  align-items:center;
}
.guide-img{
  border-radius:24px;
  overflow:hidden;
  background:var(--panel);
  box-shadow:0 24px 70px rgba(0,0,0,.35);
  position:relative;
}
.guide-img img{
  width:100%;
  height:100%;
  min-height:340px;
  aspect-ratio:4/3;
}
.guide-img::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:30%;
  background:linear-gradient(180deg,transparent,rgba(11,16,27,.42));
}
.guide-badge{
  position:absolute;
  left:20px;
  bottom:20px;
  z-index:2;
  backdrop-filter:blur(4px);
}
.guide-copy h2{
  font-size:clamp(1.6rem,3vw,2.3rem);
  margin-top:8px;
  margin-bottom:16px;
  line-height:1.3;
}
.guide-copy > p{
  font-size:15px;
  color:var(--text-soft);
  margin-bottom:24px;
}
.guide-list{
  margin-bottom:26px;
}
.guide-list li{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-bottom:1px dashed rgba(255,255,255,.12);
  align-items:flex-start;
}
.guide-list li:last-child{border-bottom:none}
.guide-dot{
  margin-top:6px;
  width:8px;
  height:8px;
  min-width:8px;
  border-radius:2px;
  background:var(--gradient);
}
.guide-list strong{
  font-size:16px;
  font-weight:600;
}
.guide-list span{
  display:block;
  color:var(--text-soft);
  font-size:14px;
}
/* rec cards */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:42px;
}
.rec-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .25s,border-color .3s,box-shadow .3s;
  min-height:380px;
}
.rec-card:hover{
  transform:translateY(-6px);
  border-color:rgba(33,240,208,.22);
  box-shadow:var(--shadow-hover),0 0 35px rgba(33,240,208,.06);
}
.rec-card:hover .rec-img img{
  transform:scale(1.07);
}
.rec-card.featured{
  grid-column: span 1;
}
.rec-img{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(120deg,#132036,#16243E);
}
.rec-img img{
  width:100%;
  height:100%;
  transition:transform .45s ease;
}
.rec-img::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,16,27,0) 44%,rgba(11,16,27,.55) 100%);
}
.rec-chip{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
}
.rec-content{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.rec-content h3{
  font-size:19px;
  line-height:1.45;
  padding-right:10px;
}
.rec-content p{
  color:var(--text-soft);
  font-size:14px;
  margin-top:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:auto;
  padding-top:16px;
  font-size:13px;
  color:var(--text-dim);
}
/* security notice */
.notice-panel{
  background:linear-gradient(125deg,#101B30,#0D1425 40%,#12203A);
  border:1px solid rgba(109,111,255,.28);
  border-radius:32px;
  overflow:hidden;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.85fr);
}
.notice-main{
  padding:42px 46px;
}
.notice-main h2{
  font-size:clamp(1.6rem,3.4vw,2.5rem);
  line-height:1.3;
  margin:6px 0 16px;
}
.notice-main p{
  color:var(--text-soft);
  font-size:15px;
}
.notice-list{
  margin:24px 0 0;
}
.notice-list li{
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px 0;
  font-size:15px;
}
.notice-list svg{
  width:18px;
  height:18px;
  stroke:var(--cyan);
  flex:none;
}
.notice-side{
  background:rgba(255,255,255,.02);
  border-left:1px solid rgba(255,255,255,.10);
  padding:34px 32px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.notice-side .rel-num{
  font-family:"Barlow Condensed","Rajdhani",sans-serif;
  font-size:76px;
  font-weight:700;
  line-height:1;
  background:linear-gradient(120deg,var(--gold),var(--pink));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.notice-side h3{
  font-size:22px;
  margin-top:10px;
  margin-bottom:14px;
}
.notice-side p{
  font-size:14px;
  color:var(--text-soft);
  flex:1;
}
.rec-tag{
  display:inline-flex;
  align-items:center;
  color:var(--cyan);
  font-size:14px;
  gap:6px;
  margin-top:18px;
  transition:color .2s;
}
.rec-tag:hover{color:#fff}
.rec-tag svg{width:16px;height:16px}
/* quote */
.quote-band{
  margin-top:34px;
  border-left:4px solid var(--cyan);
  background:rgba(33,240,208,.05);
  border-radius:0 18px 18px 0;
  padding:18px 22px;
  color:var(--text-soft);
  font-size:15px;
}
.quote-band strong{
  color:var(--text);
}
/* CTA */
.cta-box{
  border-radius:30px;
  background:linear-gradient(120deg,rgba(20,29,48,.94),rgba(14,19,32,.98)),linear-gradient(120deg,#FF3D77,#6D6FFF);
  position:relative;
  overflow:hidden;
  padding:clamp(36px,5vw,66px) clamp(28px,5vw,66px);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  border:1px solid rgba(33,240,208,.18);
}
.cta-box::before{
  content:"";
  position:absolute;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,61,119,.32),transparent 68%);
  right:-120px;
  top:-180px;
  pointer-events:none;
}
.cta-box::after{
  content:"";
  position:absolute;
  width:360px;
  height:360px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(33,240,208,.25),transparent 66%);
  left:-110px;
  bottom:-190px;
  pointer-events:none;
}
.cta-copy{
  position:relative;
  z-index:1;
  max-width:720px;
}
.cta-copy .eyebrow{
  color:var(--gold);
}
.cta-copy .eyebrow::before{
  background:var(--gold);
  box-shadow:0 0 10px rgba(255,200,92,.6);
}
.cta-copy h2{
  font-size:clamp(1.6rem,3.2vw,2.6rem);
  line-height:1.25;
  margin:6px 0 14px;
}
.cta-copy p{
  font-size:15px;
  color:var(--text-soft);
  max-width:620px;
}
.cta-buttons{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
/* faq */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:34px;
  align-items:start;
}
.faq-intro{
  position:sticky;
  top:120px;
}
.faq-intro h2{
  font-size:clamp(1.6rem,3vw,2.4rem);
  margin-top:8px;
  margin-bottom:18px;
}
.faq-intro p{
  color:var(--text-soft);
  font-size:15px;
  margin-bottom:20px;
}
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:18px;
  background:var(--card);
  overflow:hidden;
  transition:border-color .25s,background .2s;
}
.faq-item:hover{
  border-color:rgba(255,255,255,.18);
}
.faq-item[open]{
  border-color:rgba(33,240,208,.5);
  background:var(--panel-2);
}
.faq-item summary{
  cursor:pointer;
  position:relative;
  padding:20px 58px 20px 24px;
  font-weight:600;
  font-size:16px;
  line-height:1.5;
  display:list-item;
  list-style:none;
  color:var(--text);
  transition:color .2s;
}
.faq-item summary:hover{
  color:var(--cyan);
}
.faq-item summary::after{
  content:"+";
  position:absolute;
  width:30px;
  height:30px;
  border-radius:50%;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);
  color:var(--cyan);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  font-weight:300;
  transition:transform .2s,background .2s;
}
.faq-item[open] summary::after{
  transform:translateY(-50%) rotate(45deg);
  background:rgba(33,240,208,.12);
}
.faq-ans{
  padding:0 24px 22px 24px;
  font-size:14px;
  color:var(--text-soft);
  border-top:1px dashed rgba(255,255,255,.08);
  margin:0 14px;
  padding-inline:10px;
  padding-bottom:18px;
}
.faq-ans p{
  padding-top:16px;
}
/* footer */
.site-footer{
  background:#0A0F19;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:68px;
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .9fr .9fr;
  gap:60px;
  padding-bottom:44px;
}
.footer-brand-name{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:22px;
  font-weight:800;
}
.brand-mini{
  width:38px;
  height:38px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--cyan),var(--blue));
  color:#07121C;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:800;
}
.footer-brand p{
  color:var(--text-soft);
  font-size:14px;
  max-width:360px;
  margin-top:16px;
  line-height:1.9;
}
.footer-col h4{
  color:var(--text);
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  position:relative;
  padding-bottom:10px;
}
.footer-col h4::after{
  content:"";
  display:block;
  width:28px;
  height:2px;
  background:var(--gradient);
  border-radius:4px;
}
.footer-col ul li{
  margin-bottom:11px;
}
.footer-col a{
  color:var(--text-soft);
  font-size:14px;
  transition:color .2s,padding-left .2s;
}
.footer-col a:hover{
  color:var(--cyan);
  padding-left:4px;
}
.footer-techline{
  border-top:1px solid rgba(255,255,255,.07);
  padding:18px 0 30px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  color:var(--text-dim);
  font-size:13px;
}
.footer-bottom a{
  color:var(--text-soft);
}
.footer-bottom a:hover{
  color:var(--cyan);
}
/* responsiveness */
@media (max-width:1200px){
  .svc-grid{
    grid-template-columns:repeat(2,1fr);
    gap:16px;
  }
  .steps-wrap{
    grid-template-columns:repeat(2,1fr);
  }
  .rec-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media (max-width:992px){
  .header-inner{
    gap:16px;
  }
  .nav-main{
    position:fixed;
    inset:0 0 auto 0;
    top:0;
    height:100vh;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:28px;
    background:rgba(10,15,27,.98);
    backdrop-filter:blur(20px);
    margin:0;
    padding:48px 24px;
    transform:translateY(-104%);
    transition:transform .4s cubic-bezier(.22,1,.36,1);
    z-index:-1;
    border-bottom:1px solid rgba(33,240,208,.2);
  }
  .site-header.menu-open .nav-main{
    transform:translateY(0);
  }
  .nav-link{
    font-size:20px;
  }
  .menu-toggle{
    display:inline-flex;
  }
  .nav-login-desktop{
    display:none;
  }
  .hero-grid{
    grid-template-columns:1fr;
    gap:36px;
  }
  .cat-hero{
    min-height:auto;
  }
  .hero-panel{
    max-width:680px;
  }
  .guide-split{
    grid-template-columns:1fr;
  }
  .notice-panel{
    grid-template-columns:1fr;
  }
  .notice-side{
    border-left:none;
    border-top:1px solid rgba(255,255,255,.10);
  }
  .faq-grid{
    grid-template-columns:1fr;
  }
  .faq-intro{
    position:static;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:40px;
  }
  .footer-brand{
    grid-column:span 2;
  }
}
@media (max-width:768px){
  .container,.hero-grid{
    width:min(100% - 32px,var(--max));
  }
  .section-head{
    align-items:flex-start;
    flex-direction:column;
    gap:12px;
  }
  .svc-grid{
    grid-template-columns:1fr;
  }
  .steps-wrap{
    grid-template-columns:1fr;
  }
  .rec-grid{
    grid-template-columns:1fr;
  }
  .hero-actions .btn{
    flex:1;
    justify-content:center;
  }
  .crumb{
    overflow-x:auto;
    white-space:nowrap;
    padding-block:10px;
  }
  .cta-box{
    flex-direction:column;
    align-items:stretch;
  }
  .cta-buttons .btn{
    flex:1;
    justify-content:center;
  }
  .footer-bottom{
    flex-direction:column;
    gap:12px;
  }
}
@media (max-width:576px){
  .brand-name{
    font-size:15px;
    letter-spacing:0;
  }
  .brand-mark{
    width:40px;
    height:40px;
    font-size:13px;
    border-radius:12px;
  }
  .brand-meta{
    font-size:11px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-brand{
    grid-column:span 1;
  }
  .hero-stat-row{
    grid-template-columns:repeat(3,1fr);
  }
  .hero-stat strong{
    font-size:22px;
  }
  .notice-main{
    padding:28px 22px;
  }
  .notice-side{
    padding:26px 22px;
  }
  .guide-img img{
    min-height:220px;
  }
  .rec-card{
    min-height:350px;
  }
  .faq-item summary{
    padding-inline:15px 50px;
    font-size:15px;
  }
}

/* roulang page: category2 */
:root {
    --bg: #0B101B;
    --bg-soft: #101728;
    --bg-panel: #131C2E;
    --card: #121C30;
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(255, 255, 255, 0.16);
    --text: rgba(255, 255, 255, 0.94);
    --text-sub: rgba(255, 255, 255, 0.72);
    --text-mute: rgba(255, 255, 255, 0.48);
    --primary: #21F0D0;
    --violet: #6D6FFF;
    --pink: #FF3D77;
    --gold: #FFC85C;
    --cyan-soft: rgba(33, 240, 208, 0.14);
    --gradient: 135deg, #21F0D0, #6D6FFF;
    --gradient-all: 135deg, #21F0D0, #6D6FFF, #FF3D77;
    --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.30);
    --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.46);
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --container: 1440px;
    --space-section: clamp(64px, 8vw, 108px);
    --font-ui: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    --font-num: "Barlow Condensed", "DIN Alternate", "Rajdhani", "Arial Narrow", sans-serif;
  }
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
    background: var(--bg);
  }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img {
    max-width: 100%;
    display: block;
    object-fit: cover;
    border: 0;
  }
  a {
    color: var(--text);
    text-decoration: none;
    transition: color .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
  }
  a:hover {
    color: var(--primary);
  }
  button {
    font-family: inherit;
    cursor: pointer;
  }
  ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  h1, h2, h3, h4, p {
    margin: 0;
  }
  h1, h2, h3 {
    line-height: 1.25;
    font-weight: 700;
  }
  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }
  .site-header {
    position: relative;
    z-index: 100;
    background: rgba(11, 16, 27, 0.82);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
  }
  .header-inner {
    position: relative;
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    border-radius: 16px;
  }
  .brand-mark {
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: linear-gradient(var(--gradient));
    color: #041018;
    font-weight: 800;
    font-size: 16px;
    letter-spacing: -.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 24px rgba(33, 240, 208, 0.22);
  }
  .brand-txt {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    min-width: 0;
  }
  .brand-name {
    font-size: 21px;
    font-weight: 800;
    letter-spacing: .5px;
    white-space: nowrap;
  }
  .brand-meta {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-top: 2px;
    color: var(--text-mute);
    font-size: 12px;
    letter-spacing: .3px;
  }
  .brand-meta .official {
    color: var(--gold);
    border: 1px solid rgba(255, 200, 92, 0.45);
    border-radius: 999px;
    padding: 0 7px;
    font-size: 10px;
    line-height: 18px;
  }
  .nav-main {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 28px;
  }
  .nav-link {
    position: relative;
    font-weight: 500;
    color: var(--text);
    padding: 8px 2px 12px;
  }
  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 6px;
    height: 2px;
    width: 0;
    background: linear-gradient(var(--gradient));
    border-radius: 2px;
    transition: width .25s ease;
    box-shadow: 0 0 12px rgba(33, 240, 208, 0.55);
  }
  .nav-link:hover,
  .nav-link.active {
    color: #fff;
  }
  .nav-link:hover::after,
  .nav-link.active::after {
    width: 100%;
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 999px;
    padding: 0 26px;
    height: 52px;
    font-weight: 700;
    font-size: 15px;
    background: linear-gradient(var(--gradient));
    color: #08121A;
    box-shadow: 0 0 24px rgba(33, 240, 208, 0.12);
    transition: transform .2s ease, box-shadow .25s ease, filter .2s ease;
    white-space: nowrap;
  }
  .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 32px rgba(33, 240, 208, 0.24);
    filter: saturate(1.1);
    color: #08121A;
  }
  .btn:active {
    transform: translateY(1px);
  }
  .btn-sm {
    height: 42px;
    padding: 0 22px;
    font-size: 14px;
  }
  .btn-line {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(33, 240, 208, 0.8);
  }
  .btn-line:hover {
    background: rgba(33, 240, 208, 0.1);
    color: #fff;
  }
  .menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--line);
    position: relative;
    align-items: center;
    justify-content: center;
  }
  .menu-toggle .line {
    width: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 4px;
    transition: all .2s ease;
  }
  .menu-toggle .line::before,
  .menu-toggle .line::after {
    content: "";
    position: absolute;
    left: 50%;
    width: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 4px;
    transform: translateX(-50%);
    transition: all .25s ease;
  }
  .menu-toggle .line::before {
    top: 14px;
  }
  .menu-toggle .line::after {
    bottom: 14px;
  }
  .site-header.nav-open .menu-toggle .line {
    background: transparent;
  }
  .site-header.nav-open .menu-toggle .line::before {
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
  }
  .site-header.nav-open .menu-toggle .line::after {
    bottom: auto;
    top: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
  }
  @media (max-width: 992px) {
    .header-inner {
      min-height: 70px;
      gap: 16px;
    }
    .nav-main {
      position: fixed;
      top: 70px;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 99;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
      padding: 32px 24px 48px;
      background: rgba(10, 15, 27, 0.98);
      backdrop-filter: blur(20px);
      transform: translateY(-12px);
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transition: opacity .22s ease, transform .22s ease, visibility .22s;
    }
    .site-header.nav-open .nav-main {
      opacity: 1;
      transform: none;
      visibility: visible;
      pointer-events: auto;
    }
    .nav-link {
      width: 100%;
      font-size: 20px;
      font-weight: 700;
      padding: 14px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 0;
    }
    .nav-link::after {
      bottom: 8px;
      left: 0;
      right: auto;
    }
    .nav-login-desktop {
      display: none;
    }
    .menu-toggle {
      display: inline-flex;
    }
  }
  .site-footer {
    border-top: 1px solid var(--line);
    background: #0D1422;
    padding: 72px 0 28px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .footer-brand-name {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
  }
  .brand-mini {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    width: 34px;
    height: 34px;
    background: linear-gradient(var(--gradient));
    color: #041018;
    font-size: 13px;
    font-weight: 800;
  }
  .site-footer p {
    margin-top: 16px;
    color: var(--text-sub);
    font-size: 15px;
    max-width: 540px;
  }
  .footer-col h4 {
    font-size: 16px;
    margin-bottom: 16px;
    color: #fff;
  }
  .footer-col ul {
    display: grid;
    gap: 10px;
  }
  .footer-col a {
    color: var(--text-sub);
    font-size: 15px;
  }
  .footer-col a:hover {
    color: var(--primary);
  }
  .footer-bottom {
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    gap: 24px;
    color: var(--text-mute);
    font-size: 14px;
  }
  .footer-bottom a {
    color: var(--text-sub);
  }
  .footer-bottom a:hover {
    color: var(--primary);
  }
  @media (max-width: 768px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }
    .footer-bottom {
      flex-direction: column;
      gap: 6px;
    }
  }
  .category-hero,
  .cat-hero {
    position: relative;
    min-height: 330px;
    display: flex;
    align-items: center;
    background: url("/assets/images/backpic/back-2.webp") center/cover no-repeat, #101728;
    isolation: isolate;
    padding: 72px 0 76px;
  }
  .category-hero::before,
  .cat-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 16, 27, 0.98) 0%, rgba(13, 20, 37, 0.86) 60%, rgba(11, 16, 27, 0.35) 100%);
    z-index: -1;
  }
  .category-hero::after,
  .cat-hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(180deg, rgba(11,16,27,0), var(--bg));
    z-index: -1;
  }
  .cat-hero-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: center;
    width: 100%;
  }
  .cat-hero-copy {
    max-width: 820px;
  }
  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--cyan-soft);
    border: 1px solid rgba(33, 240, 208, 0.35);
    color: var(--primary);
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    letter-spacing: .4px;
  }
  .hero-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 99px;
    background: var(--primary);
    box-shadow: 0 0 8px rgba(33, 240, 208, .8);
  }
  .cat-hero h1 {
    margin-top: 22px;
    font-size: clamp(2.1rem, 4vw, 3.2rem);
    letter-spacing: -0.5px;
    color: #fff;
  }
  .cat-hero h1 .grad-text {
    background: linear-gradient(var(--gradient));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
  .cat-hero .sub-copy {
    margin-top: 18px;
    max-width: 640px;
    color: var(--text-sub);
    font-size: 18px;
    line-height: 1.8;
  }
  .hero-btns {
    margin-top: 30px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
  }
  .hero-data-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    max-width: 360px;
    justify-content: flex-end;
  }
  .hero-data-badge {
    flex: 0 0 160px;
    padding: 18px 14px 16px;
    background: rgba(18, 27, 44, 0.7);
    backdrop-filter: blur(13px);
    border: 1px solid var(--line);
    border-radius: 22px;
    align-items: center;
    gap: 12px;
    transition: transform .2s ease, border-color .2s ease;
  }
  .hero-data-badge:hover {
    border-color: rgba(33, 240, 208, 0.46);
    transform: translateY(-3px);
  }
  .hero-data-badge .data-num {
    font-family: var(--font-num);
    font-size: 38px;
    line-height: 1;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.5px;
  }
  .hero-data-badge .data-num.gold {
    color: var(--gold);
  }
  .hero-data-badge .data-num.violet {
    color: #A7A9FF;
  }
  .hero-data-badge .data-lbl {
    margin-top: 5px;
    color: var(--text-sub);
    font-size: 13px;
    white-space: nowrap;
  }
  @media (max-width: 992px) {
    .cat-hero {
      min-height: 440px;
    }
    .cat-hero-grid {
      grid-template-columns: 1fr;
    }
    .hero-data-group {
      justify-content: flex-start;
      max-width: 100%;
    }
  }
  .section-block {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
  }
  .section-line {
    border-top: 1px solid rgba(255,255,255,0.05);
  }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 34px;
  }
  .section-kicker {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: .3px;
    font-size: 14px;
  }
  .section-kicker::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 10px var(--primary);
  }
  .section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 7px;
    color: #fff;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
  }
  .section-title::before {
    content: "";
    display: block;
    flex: 0 0 auto;
    width: 4px;
    height: 28px;
    background: linear-gradient(180deg, var(--primary), var(--violet));
    border-radius: 99px;
  }
  .section-more a {
    color: var(--text-sub);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .section-more a:hover {
    color: var(--primary);
  }
  @media (max-width: 768px) {
    .section-head {
      align-items: flex-start;
    }
  }
  .data-status {
    position: relative;
    background: #0E1625;
    border-top: 1px solid rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    padding: 26px 0;
    overflow: hidden;
  }
  .data-status .container {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 20px 28px;
  }
  .status-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: rgba(255,255,255,0.82);
    font-size: 14px;
  }
  .status-chip i {
    width: 8px;
    height: 8px;
    border-radius: 99px;
    background: var(--primary);
    display: inline-block;
    box-shadow: 0 0 10px var(--primary);
  }
  .status-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
  }
  .status-pills span {
    color: var(--text-sub);
  }
  .status-pills b {
    color: #fff;
    font-weight: 500;
  }
  .showcase-split {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
  }
  .feature-card-large {
    position: relative;
    min-height: 380px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transition: transform .25s ease, box-shadow .25s ease;
  }
  .feature-card-large:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .feature-card-large .cover-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  .feature-card-large .cover-img img {
    width: 100%;
    height: 100%;
    transition: transform .8s ease;
  }
  .feature-card-large:hover .cover-img img {
    transform: scale(1.06);
  }
  .feature-card-large .cover-grad {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(200deg, rgba(12, 15, 25, .3) 0%, rgba(9, 14, 25, 0.82) 78%);
  }
  .feature-card-copy {
    position: absolute;
    z-index: 3;
    left: 28px;
    right: 28px;
    bottom: 28px;
  }
  .feature-card-tag {
    display: inline-block;
    background: var(--primary);
    color: #05100E;
    font-weight: 800;
    font-size: 12px;
    border-radius: 999px;
    padding: 5px 12px;
    letter-spacing: .4px;
  }
  .feature-card-copy h3 {
    margin-top: 14px;
    color: #fff;
    font-size: clamp(1.3rem, 2vw, 1.7rem);
    max-width: 460px;
  }
  .feature-card-copy p {
    color: rgba(255,255,255,0.8);
    margin-top: 9px;
    font-size: 15px;
    max-width: 540px;
  }
  .stack-right {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .mini-card {
    position: relative;
    border-radius: var(--radius-lg);
    background: var(--card);
    border: 1px solid var(--line);
    overflow: hidden;
    min-height: 178px;
    padding: 22px;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .mini-card:hover {
    transform: translateY(-3px);
    border-color: rgba(33, 240, 208, 0.36);
    box-shadow: var(--shadow-hover);
  }
  .mini-card-top {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: center;
  }
  .mini-icon {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    background: linear-gradient(var(--gradient));
    display: flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
    font-weight: 800;
    font-family: var(--font-num);
    font-size: 19px;
    color: #051018;
  }
  .mini-date {
    color: var(--text-mute);
    font-size: 13px;
  }
  .mini-card h3 {
    margin-top: 18px;
    font-size: 18px;
    color: #fff;
  }
  .mini-card p {
    margin-top: 7px;
    color: var(--text-sub);
    line-height: 1.7;
    font-size: 14px;
  }
  .feature-image-pair {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: stretch;
  }
  .image-side {
    overflow: hidden;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    position: relative;
    min-height: 240px;
  }
  .image-side img {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
  }
  .content-side {
    background: var(--card);
    padding: 32px;
  }
  @media (max-width: 992px) {
    .showcase-split,
    .feature-image-pair {
      grid-template-columns: 1fr;
    }
    .image-side {
      min-height: 220px;
      border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .feature-card-large {
      min-height: 340px;
    }
  }
  .panel-inverse-split {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 20px;
  }
  .topic-main-panel {
    background:
      linear-gradient(145deg, rgba(109, 111, 255, 0.16), rgba(33, 240, 208, 0.04)),
      url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    position: relative;
    overflow: hidden;
  }
  .topic-main-panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(9, 14, 26, 0.7), transparent);
    z-index: 0;
  }
  .topic-main-panel > * {
    position: relative;
    z-index: 1;
  }
  .topic-main-panel .panel-tag {
    color: var(--gold);
    font-size: 13px;
    border: 1px solid rgba(255, 200, 92, 0.5);
    background: rgba(255, 200, 92, 0.07);
    border-radius: 999px;
    padding: 4px 10px;
  }
  .topic-main-panel h2 {
    color: #fff;
    font-size: clamp(1.4rem, 2vw, 2rem);
    margin-top: 20px;
    max-width: 360px;
  }
  .topic-main-panel p {
    color: rgba(255,255,255,0.8);
    margin-top: 14px;
    max-width: 400px;
  }
  .rank-panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 30px 30px 20px;
  }
  .rank-panel-title {
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .rank-list {
    display: grid;
    gap: 4px;
  }
  .rank-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    transition: background .2s ease;
    border-radius: 14px;
  }
  .rank-item:last-child {
    border-bottom: 0;
  }
  .rank-item:hover {
    background: rgba(33, 240, 208, 0.055);
    padding-left: 12px;
    padding-right: 12px;
  }
  .rank-no {
    font-family: var(--font-num);
    font-size: 26px;
    color: rgba(255,255,255,0.3);
    min-width: 48px;
  }
  .rank-no.gold {
    color: var(--gold);
  }
  .rank-info {
    flex: 1;
    min-width: 0;
  }
  .rank-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
  }
  .rank-info span {
    display: block;
    color: var(--text-mute);
    font-size: 13px;
    margin-top: 3px;
  }
  .rank-go {
    color: var(--primary);
    opacity: .5;
    font-size: 22px;
    line-height: 1;
    transition: opacity .2s ease, transform .2s ease;
  }
  .rank-item:hover .rank-go {
    opacity: 1;
    transform: translateX(3px);
  }
  @media (max-width: 992px) {
    .panel-inverse-split {
      grid-template-columns: 1fr;
    }
  }
  .cat-news-section {
    background: #0E1422;
  }
  .news-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
  .cat-news-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: transform .22s ease, box-shadow .25s ease, border-color .22s ease;
  }
  .cat-news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(109, 111, 255, .36);
  }
  .news-card-pic {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
  }
  .news-card-pic img {
    width: 100%;
    height: 100%;
    transition: transform .6s ease;
  }
  .cat-news-card:hover .news-card-pic img {
    transform: scale(1.06);
  }
  .news-card-pic .tag {
    position: absolute;
    top: 14px;
    left: 14px;
    border-radius: 999px;
    padding: 3px 11px;
    background: rgba(8, 13, 23, 0.72);
    backdrop-filter: blur(8px);
    color: var(--primary);
    font-size: 12px;
    border: 1px solid rgba(33, 240, 208, 0.4);
  }
  .news-card-body {
    padding: 20px 20px 22px;
  }
  .news-card-body h3 {
    font-size: 17px;
    color: #fff;
    line-height: 1.5;
  }
  .news-card-body h3 a {
    color: inherit;
  }
  .news-card-body h3 a:hover {
    color: var(--primary);
  }
  .news-card-body p {
    color: var(--text-sub);
    font-size: 14px;
    margin-top: 8px;
    line-height: 1.7;
  }
  .news-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 18px;
    color: var(--text-mute);
    font-size: 13px;
  }
  .news-card-meta .link-arrow {
    color: var(--primary);
    opacity: .65;
    transition: opacity .2s, transform .2s;
  }
  .cat-news-card:hover .link-arrow {
    opacity: 1;
    transform: translateX(3px);
  }
  @media (max-width: 992px) {
    .news-card-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }
  @media (max-width: 620px) {
    .news-card-grid {
      grid-template-columns: 1fr;
    }
  }
  .notice-split {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    gap: 24px;
    align-items: center;
  }
  .notice-card {
    position: relative;
    overflow: hidden;
    border-radius: 30px;
    padding: 48px 42px;
    background:
      radial-gradient(circle at 15% 10%, rgba(33,240,208,.20), transparent 42%),
      radial-gradient(circle at 80% 0%, rgba(109,111,255,.28), transparent 38%),
      linear-gradient(135deg, #102236, #10172A);
    border: 1px solid rgba(255,255,255,0.10);
  }
  .notice-card h2 {
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    color: #fff;
  }
  .notice-card p {
    color: var(--text-sub);
    margin-top: 12px;
    max-width: 520px;
    font-size: 16px;
  }
  .notice-actions {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 13px;
  }
  .access-dock {
    border-radius: 30px;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.055);
    padding: 34px;
    box-shadow: 0 18px 44px rgba(0,0,0,.34);
    backdrop-filter: blur(8px);
  }
  .access-dock-title {
    color: #fff;
    font-size: 22px;
    font-weight: 700;
  }
  .access-dock small {
    display: block;
    margin-top: 5px;
    color: var(--text-mute);
  }
  .access-input-wrap {
    margin-top: 24px;
    display: grid;
    gap: 13px;
  }
  .access-input-wrap input {
    width: 100%;
    height: 48px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.13);
    background: rgba(255,255,255,0.06);
    padding: 0 16px;
    color: #fff;
    font-size: 15px;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
  }
  .access-input-wrap input::placeholder {
    color: rgba(255,255,255,0.38);
  }
  .access-input-wrap input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(33,240,208,0.15);
  }
  .access-helper {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    margin-top: 14px;
    color: var(--text-mute);
    font-size: 13px;
  }
  .access-helper a {
    color: var(--primary);
  }
  .access-helper a:hover {
    text-decoration: underline;
  }
  @media (max-width: 992px) {
    .notice-split {
      grid-template-columns: 1fr;
    }
    .notice-card,
    .access-dock {
      border-radius: 24px;
      padding: 28px 22px;
    }
  }
  .faq-grid {
    display: grid;
    grid-template-columns: 0.72fr 1.28fr;
    gap: 48px;
    align-items: start;
  }
  .faq-intro .section-title {
    margin-top: 0;
  }
  .faq-intro p {
    margin-top: 19px;
    color: var(--text-sub);
    max-width: 400px;
  }
  .faq-list {
    display: grid;
    gap: 13px;
  }
  .faq-item {
    background: var(--bg-panel);
    border: 1px solid var(--line);
    border-radius: 20px;
    overflow: hidden;
  }
  .faq-item[open] {
    border-color: rgba(33,240,208,0.32);
    box-shadow: 0 10px 24px rgba(0,0,0,0.18);
  }
  .faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 19px 22px;
    cursor: pointer;
    font-weight: 600;
    color: #fff;
  }
  .faq-item summary::-webkit-details-marker {
    display: none;
  }
  .faq-item summary:hover {
    color: var(--primary);
  }
  .plus-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    position: relative;
    flex: 0 0 auto;
    transition: transform .25s, background .25s, border-color .25s;
  }
  .plus-icon::after,
  .plus-icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 1.7px;
    background: var(--primary);
    transform: translate(-50%, -50%);
  }
  .plus-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
  }
  .faq-item[open] .plus-icon {
    transform: rotate(45deg);
    background: rgba(33, 240, 208, 0.11);
    border-color: rgba(33,240,208,0.5);
  }
  .faq-answer {
    padding: 0 22px 20px;
    color: var(--text-sub);
    line-height: 1.8;
    font-size: 15px;
  }
  @media (max-width: 860px) {
    .faq-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }
  .mt-0 {
    margin-top: 0;
  }
  .mt-16 {
    margin-top: 16px;
  }
  .footer-techline {
    margin-top: 22px;
  }
  .focus-visible,
  a:focus-visible,
  button:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 6px;
  }
  @media (max-width: 576px) {
    .container {
      padding-left: 16px;
      padding-right: 16px;
    }
    .cat-hero {
      padding: 50px 0 56px;
    }
    .hero-btns .btn {
      width: 100%;
    }
    .hero-data-group {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .hero-data-badge {
      flex: 1 0 auto;
      width: 100%;
      padding: 14px;
    }
    .hero-data-badge .data-num {
      font-size: 30px;
    }
    .section-more {
      display: none;
    }
    .notice-actions .btn {
      flex: 1;
      width: 100%;
      margin: 0;
    }
    .brand-name {
      font-size: 18px;
      letter-spacing: .2px;
    }
  }

/* roulang page: category3 */
:root{
  --bg-deep:#0B101B;
  --bg-panel:#101728;
  --bg-card:#121C30;
  --bg-soft:rgba(255,255,255,.045);
  --border:rgba(255,255,255,.09);
  --cyan:#21F0D0;
  --violet:#6D6FFF;
  --pink:#FF3D77;
  --gold:#FFC85C;
  --grad:linear-gradient(135deg,#21F0D0,#6D6FFF);
  --grad-hot:linear-gradient(135deg,#6D6FFF,#FF3D77);
  --text-main:rgba(255,255,255,.94);
  --text-sub:rgba(255,255,255,.72);
  --text-dim:rgba(255,255,255,.48);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-lg:0 24px 60px rgba(0,0,0,.38);
  --shadow-md:0 12px 30px rgba(0,0,0,.30);
  --max-width:1440px;
  --space-section:96px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth}
body{
  background:var(--bg-deep);
  color:var(--text-main);
  font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;border:0;outline:0;cursor:pointer;background:none;color:inherit}
input{font:inherit;border:0;outline:0;background:none;color:inherit}
.container{margin:0 auto;max-width:var(--max-width);padding-left:24px;padding-right:24px}
::selection{background:rgba(33,240,208,.28);color:#fff}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 32px;border-radius:999px;font-weight:600;
  font-size:16px;line-height:1;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
  white-space:nowrap;position:relative;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{
  outline:2px solid var(--cyan);outline-offset:4px;
}
.btn-primary{
  background:var(--grad);color:#07101C;box-shadow:0 8px 26px rgba(109,111,255,.35);
}
.btn-primary:hover{box-shadow:0 14px 38px rgba(33,240,208,.38)}
.btn-ghost{
  background:rgba(255,255,255,.04);color:#fff;border:1px solid rgba(33,240,208,.46);
}
.btn-ghost:hover{background:rgba(33,240,208,.10);border-color:var(--cyan);box-shadow:0 0 22px rgba(33,240,208,.18)}
.btn-sm{min-height:44px;padding:0 24px;font-size:15px}
.btn-gold{
  background:linear-gradient(135deg,var(--gold),#FF9147);color:#131313;
  box-shadow:0 8px 22px rgba(255,200,92,.24);
}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(11,16,27,.90);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  box-shadow:0 8px 28px rgba(0,0,0,.18);
}
.header-inner{
  min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:14px;flex-shrink:0}
.brand-mark{
  width:48px;height:48px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;color:#fff;background:var(--grad);position:relative;
  box-shadow:0 0 20px rgba(33,240,208,.26);
}
.brand-mark::after{content:"";position:absolute;inset:3px;border-radius:10px;border:1px solid rgba(255,255,255,.3)}
.brand-txt{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.4px;color:#fff;white-space:nowrap}
.brand-meta{display:flex;align-items:center;gap:8px;margin-top:2px;font-size:12px;color:var(--text-dim);letter-spacing:.2px}
.brand-meta .official{
  padding:0 6px;height:18px;line-height:18px;border-radius:4px;
  background:rgba(33,240,208,.12);color:var(--cyan);font-weight:600;font-size:11px;
}
.nav-main{display:flex;align-items:center;gap:36px;margin-left:auto}
.nav-main a{
  position:relative;font-size:16px;font-weight:500;color:rgba(255,255,255,.82);
  padding:8px 0;transition:color .2s ease;
}
.nav-main a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--grad);transform:translateX(-50%);
  transition:width .3s ease;
}
.nav-main a:hover{color:#fff}
.nav-main a:hover::after{width:55%}
.nav-main a.active{color:#fff;font-weight:600}
.nav-main a.active::after{width:100%;box-shadow:0 0 16px rgba(33,240,208,.6)}
.header-actions{display:flex;align-items:center;gap:16px}
.menu-toggle{
  display:none;width:46px;height:46px;border-radius:12px;border:1px solid var(--border);
  background:rgba(255,255,255,.03);position:relative;
}
.menu-toggle .line,.menu-toggle .line::before,.menu-toggle .line::after{
  position:absolute;left:12px;right:12px;height:2px;background:var(--cyan);content:"";border-radius:1px;
  transition:all .3s ease;
}
.menu-toggle .line{top:22px}
.menu-toggle .line::before{top:-7px}
.menu-toggle .line::after{top:7px}
.menu-toggle.open .line{background:transparent}
.menu-toggle.open .line::before{top:0;transform:rotate(45deg)}
.menu-toggle.open .line::after{top:0;transform:rotate(-45deg)}
.mobile-menu-panel{
  display:none;position:fixed;top:76px;left:0;width:100%;height:calc(100vh - 76px);
  background:rgba(11,16,27,.97);backdrop-filter:blur(12px);
  transform:translateX(100%);transition:transform .35s ease;z-index:89;overflow-y:auto;
}
.mobile-menu-panel.open{transform:translateX(0)}
.mobile-menu-panel .mobile-nav{padding:32px 24px;display:flex;flex-direction:column;gap:8px}
.mobile-menu-panel .mobile-nav a{
  padding:13px 16px;border-radius:12px;color:rgba(255,255,255,.86);font-size:18px;font-weight:500;
}
.mobile-menu-panel .mobile-nav a:hover,.mobile-menu-panel .mobile-nav a.mobile-active{background:rgba(33,240,208,.08);color:var(--cyan)}
.mobile-menu-panel .btn{margin-top:16px}
@media (max-width:992px){
  .nav-main{display:none}
  .nav-login-desktop{display:none}
  .menu-toggle{display:block}
  .mobile-menu-panel{display:block}
  .mobile-menu-panel .btn{display:inline-flex;width:calc(100% - 4px)}
}
@media (max-width:576px){
  .header-inner{min-height:68px}
  .brand-name{font-size:18px}
  .brand-mark{width:44px;height:44px;font-size:16px}
  .mobile-menu-panel{top:68px;height:calc(100vh - 68px)}
}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;min-height:360px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;isolation:isolate;
  border-bottom:1px solid var(--border);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(105deg,rgba(11,16,27,.98) 20%,rgba(11,16,27,.74) 56%,rgba(16,23,40,.40));
}
.cat-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(33,240,208,.16),transparent);z-index:-1;
}
.cat-hero-inner{display:flex;align-items:center;justify-content:space-between;gap:44px;padding-top:40px;padding-bottom:40px;width:100%}
.cat-hero-copy{max-width:760px}
.cat-tag{
  display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;
  background:rgba(33,240,208,.10);border:1px solid rgba(33,240,208,.34);
  color:var(--cyan);font-weight:600;font-size:14px;margin-bottom:22px;
}
.cat-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.cat-hero-copy h1{
  font-size:clamp(2rem,5vw,3.2rem);line-height:1.2;letter-spacing:-.01em;
  font-weight:800;color:#fff;margin-bottom:18px;
}
.cat-hero-copy p{
  color:var(--text-sub);font-size:18px;line-height:1.85;max-width:660px;margin-bottom:32px;
}
.cat-hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.cat-hero-stats{
  display:grid;grid-template-columns:repeat(2,minmax(140px,1fr));gap:16px;width:410px;flex-shrink:0;
}
.metric-card{
  background:rgba(255,255,255,.045);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:22px 20px;backdrop-filter:blur(8px);transition:border-color .3s ease,transform .3s ease;
}
.metric-card.gold{
  border-color:rgba(255,200,92,.3);background:rgba(255,200,92,.08);
}
.metric-card:hover{transform:translateY(-3px);border-color:rgba(33,240,208,.5)}
.metric-card .metric-label{color:var(--text-dim);font-size:13px;display:flex;align-items:center;gap:6px}
.metric-card .metric-num{
  display:block;font-size:30px;line-height:1.2;font-weight:800;margin-top:8px;
  font-family:"Barlow Condensed","DIN Alternate","Rajdhani","HarmonyOS Sans SC",sans-serif;
  letter-spacing:.02em;
}
.metric-card .metric-num.cyan{color:var(--cyan)}
.metric-card .metric-num.gold{color:var(--gold)}
.metric-card .metric-num.violet{color:var(--violet)}
.metric-card .metric-sub{color:var(--text-sub);font-size:13px;margin-top:4px;display:block}
@media (max-width:1024px){
  .cat-hero-inner{flex-direction:column}
  .cat-hero-stats{width:100%;grid-template-columns:repeat(4,1fr)}
}
@media (max-width:768px){
  .cat-hero{min-height:auto}
  .cat-hero-stats{grid-template-columns:1fr 1fr;margin-top:8px}
  .cat-hero-copy p{font-size:16px}
}
@media (max-width:420px){
  .cat-hero-stats{grid-template-columns:1fr}
}

/* ---------- section component ---------- */
.section{padding-top:var(--space-section);padding-bottom:var(--space-section);}
.section-alt{background:linear-gradient(180deg,transparent,rgba(255,255,255,.02) 18%,rgba(255,255,255,.02) 82%,transparent)}
.section-head{margin-bottom:42px;position:relative;padding-left:18px}
.section-head::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:14px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;margin-bottom:10px;
}
.section-head .eyebrow::after{content:"";width:34px;height:1px;background:rgba(33,240,208,.6)}
.section-head h2{
  font-size:clamp(1.6rem,3.5vw,2.4rem);line-height:1.25;color:#fff;font-weight:800;
  max-width:820px;letter-spacing:-.01em;
}
.section-head p.lead{margin-top:14px;color:var(--text-sub);max-width:780px;font-size:17px}

/* two col hero split */
.split-feature{
  display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch;
}
.feature-col-main{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-md);transition:all .35s ease;
}
.feature-col-main:hover{box-shadow:var(--shadow-lg);border-color:rgba(33,240,208,.28);transform:translateY(-4px)}
.feature-main-media{height:280px;overflow:hidden;position:relative}
.feature-main-media img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.feature-col-main:hover .feature-main-media img{transform:scale(1.05)}
.feature-main-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(11,16,27,.72))}
.feature-main-body{padding:28px 28px 34px;display:flex;flex-direction:column;flex:1}
.feature-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.feature-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;
  background:rgba(33,240,208,.1);border:1px solid rgba(33,240,208,.25);color:var(--cyan);
}
.feature-main-body h3{font-size:24px;color:#fff;font-weight:750;line-height:1.35;margin-bottom:14px}
.feature-main-body p{color:var(--text-sub);line-height:1.9;flex:1}
.feature-link{margin-top:20px;display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-weight:600;transition:gap .3s ease}
.feature-link:hover{gap:14px;color:#fff}
.feature-col-sub{display:flex;flex-direction:column;gap:16px}
.feature-sub-card{
  background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:24px;flex:1;display:flex;gap:18px;transition:all .3s ease;
}
.feature-sub-card:hover{border-color:rgba(33,240,208,.35);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.feature-sub-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(33,240,208,.16),rgba(109,111,255,.16));
  border:1px solid rgba(33,240,208,.26);
}
.feature-sub-icon svg{width:22px;height:22px;color:var(--cyan)}
.feature-sub-body h3{font-size:18px;color:#fff;font-weight:700;margin-bottom:6px}
.feature-sub-body p{color:var(--text-sub);font-size:15px;line-height:1.75}
@media (max-width:992px){
  .split-feature{grid-template-columns:1fr}
  .feature-main-media{height:260px}
}
@media (max-width:600px){
  .feature-main-media{height:200px}
  .feature-main-body{padding:22px 20px}
  .feature-sub-card{flex-direction:column}
}

/* rank section */
.rank-wrap{
  background:linear-gradient(180deg,var(--bg-panel),#0E1526);
  border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-md);
}
.rank-grid{display:grid;grid-template-columns:1.05fr .9fr;gap:0}
.rank-list{padding:36px 24px 36px 36px}
.rank-row{
  display:grid;grid-template-columns:56px 1fr 30px;gap:20px;align-items:start;
  padding:22px 12px 22px 0;border-bottom:1px solid rgba(255,255,255,.06);
  transition:padding-left .3s ease,background .3s ease;border-radius:12px;
}
.rank-row:last-child{border-bottom:0}
.rank-row:hover{padding-left:16px;background:rgba(255,255,255,.025)}
.rank-number{
  width:46px;height:46px;border-radius:14px;background:rgba(255,200,92,.1);
  border:1px solid rgba(255,200,92,.28);color:var(--gold);font-size:20px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  font-family:"Barlow Condensed","DIN Alternate",sans-serif;
}
.rank-content h3{color:#fff;font-size:18px;font-weight:700;margin-bottom:4px}
.rank-content p{color:var(--text-sub);font-size:15px;line-height:1.65}
.rank-arrow{color:var(--text-dim);transition:all .3s ease;align-self:center;justify-self:end}
.rank-row:hover .rank-arrow{color:var(--cyan);transform:translateX(6px)}
.rank-side{
  background:linear-gradient(145deg,rgba(33,240,208,.08),rgba(109,111,255,.08));
  border-left:1px solid var(--border);padding:36px;
  display:flex;flex-direction:column;justify-content:space-between;
}
.rank-side .badge-soft{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  background:rgba(33,240,208,.1);color:var(--cyan);font-size:14px;font-weight:600;gap:8px;
}
.rank-desc h3{color:#fff;font-size:28px;font-weight:750;line-height:1.4;margin:22px 0 16px}
.rank-desc p{color:var(--text-sub);line-height:1.88;font-size:16px}
.rank-side-image{margin-top:28px;border-radius:18px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-md)}
.rank-side-image img{width:100%;height:220px;object-fit:cover}
@media (max-width:992px){
  .rank-grid{grid-template-columns:1fr}
  .rank-side{border-left:0;border-top:1px solid var(--border)}
}
@media (max-width:576px){
  .rank-list{padding:24px 12px 12px 18px}
  .rank-row{grid-template-columns:44px 1fr 18px;gap:12px;padding:18px 0}
  .rank-number{width:40px;height:40px;font-size:17px}
}

/* news grid */
.news-cards{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.news-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:20px;overflow:hidden;
  transition:transform .32s ease,box-shadow .32s ease,border-color .32s ease;
  display:flex;flex-direction:column;
}
.news-card:hover{border-color:rgba(33,240,208,.35);box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.news-thumb{position:relative;height:190px;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.news-card:hover .news-thumb img{transform:scale(1.08)}
.news-thumb::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 65%,rgba(11,16,27,.5))}
.news-tag{
  position:absolute;left:16px;top:16px;height:28px;padding:0 14px;border-radius:999px;
  background:rgba(11,16,27,.72);backdrop-filter:blur(8px);color:#fff;
  font-size:13px;line-height:28px;font-weight:500;border:1px solid rgba(255,255,255,.14);
}
.news-meta{color:rgba(255,255,255,.82);font-size:13px;position:absolute;right:16px;bottom:14px;display:flex;align-items:center;gap:8px}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:18px;line-height:1.5;color:#fff;font-weight:700;transition:color .25s ease}
.news-card:hover .news-body h3{color:var(--cyan)}
.news-body p{color:var(--text-sub);font-size:14px;line-height:1.7;margin:10px 0 14px;flex:1}
.news-fill{display:flex;align-items:center;gap:6px;color:var(--text-dim);font-size:14px;transition:gap .3s ease}
.news-card:hover .news-fill{color:var(--cyan);gap:12px}
@media (max-width:1200px){
  .news-cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:576px){
  .news-cards{grid-template-columns:1fr}
  .news-thumb{height:210px}
}

/* domain guide panel */
.domain-guide{
  border:1px solid rgba(33,240,208,.24);
  background:linear-gradient(135deg,#111B2B 0%,#0E1424 50%,#111B2B 100%);
  border-radius:30px;padding:30px;box-shadow:var(--shadow-lg);
}
.domain-guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.domain-guide-pic{border-radius:24px;overflow:hidden;height:330px;border:1px solid rgba(255,255,255,.12);position:relative}
.domain-guide-pic img{width:100%;height:100%;object-fit:cover}
.domain-guide-pic::before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(11,16,27,.62),transparent 70%)}
.domain-guide-copy .eyebrow{color:var(--gold);display:block;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.1em}
.domain-guide-copy h2{color:#fff;font-size:clamp(1.4rem,3vw,2.3rem);font-weight:800;line-height:1.35;margin-bottom:22px}
.domain-guide-copy p{color:var(--text-sub);line-height:1.9;margin-bottom:24px;font-size:16px}
.checklist{display:flex;flex-direction:column;gap:13px}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.86);line-height:1.6}
.check-icon{
  width:22px;height:22px;flex-shrink:0;border-radius:50%;margin-top:3px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(33,240,208,.16);border:1px solid rgba(33,240,208,.4);color:var(--cyan);
}
.check-icon svg{width:12px;height:12px}
.status-line{
  margin-top:28px;display:flex;align-items:center;gap:14px;padding:20px;border-radius:18px;
  background:rgba(255,255,255,.04);border:1px dashed rgba(255,255,255,.18);
}
.status-dot{width:12px;height:12px;border-radius:50%;background:var(--cyan);box-shadow:0 0 16px var(--cyan)}
.status-line span{color:var(--text-sub);font-size:15px}
@media (max-width:900px){
  .domain-guide-grid{grid-template-columns:1fr}
  .domain-guide-pic{height:270px}
  .domain-guide{padding:24px}
}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}
.faq-side .eyebrow{color:var(--cyan);display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;letter-spacing:.16em;margin-bottom:14px}
.faq-side .eyebrow::after{content:"";width:34px;height:1px;background:rgba(33,240,208,.55)}
.faq-side h2{font-size:clamp(1.6rem,3vw,2.3rem);color:#fff;font-weight:800;line-height:1.3}
.faq-side p{color:var(--text-sub);margin-top:18px;line-height:1.85}
.faq-contact{margin-top:28px}
.faq-contact a{
  display:inline-flex;height:48px;padding:0 24px;border-radius:999px;align-items:center;gap:10px;
  border:1px solid rgba(33,240,208,.4);background:rgba(33,240,208,.06);color:#fff;
  transition:background .3s ease,box-shadow .3s ease;
}
.faq-contact a:hover{box-shadow:0 0 22px rgba(33,240,208,.16);background:rgba(33,240,208,.12)}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:18px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item:hover{border-color:rgba(33,240,208,.22)}
.faq-item.open{border-color:rgba(33,240,208,.4);box-shadow:0 0 30px rgba(33,240,208,.06)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;text-align:left;background:transparent;color:#fff;
  font-size:16px;font-weight:600;line-height:1.5;transition:color .2s ease;
}
.faq-question:hover{color:var(--cyan)}
.faq-question .q-icon{
  width:32px;height:32px;flex-shrink:0;border-radius:50%;display:flex;align-items:center;
  justify-content:center;color:var(--cyan);font-size:20px;line-height:1;
  transition:transform .35s ease,background .3s ease;background:rgba(33,240,208,.08);
}
.faq-item .faq-question .q-icon{transform:rotate(0deg)}
.faq-item.open .faq-question .q-icon{transform:rotate(45deg);background:rgba(33,240,208,.16)}
.faq-question:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;padding:0 28px}
.faq-item.open .faq-answer{padding:0 28px 24px}
.faq-answer-inner{border-top:1px dashed rgba(255,255,255,.1);padding-top:18px;color:var(--text-sub);line-height:1.9;font-size:15px}
@media (max-width:992px){
  .faq-layout{grid-template-columns:1fr;gap:40px}
}
@media (max-width:576px){
  .faq-question{padding:18px}
  .faq-item.open .faq-answer{padding:0 20px 20px}
}

/* CTA area */
.cta-zone{
  position:relative;border-radius:34px;overflow:hidden;border:1px solid rgba(33,240,208,.25);
  background:linear-gradient(135deg,#10243B 0%,#122044 45%,#2B1C42 100%);
  box-shadow:var(--shadow-lg);
}
.cta-inner{display:flex;justify-content:space-between;align-items:center;padding:46px;gap:40px}
.cta-copy{max-width:640px}
.cta-copy h2{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.3;color:#fff;font-weight:800;margin-bottom:14px}
.cta-copy p{color:var(--text-sub);line-height:1.8;font-size:16px}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}
.cta-zone::after{
  content:"";position:absolute;right:-160px;bottom:-160px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,61,119,.18),transparent 68%);pointer-events:none;
}
@media (max-width:900px){
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px 24px}
}
@media (max-width:576px){
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* footer */
.site-footer{
  margin-top:var(--space-section);background:#080C15;border-top:1px solid var(--border);
  padding-top:60px;color:var(--text-sub);
}
.site-footer .container{padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer-brand-name{display:flex;align-items:center;gap:10px;color:#fff;font-size:22px;font-weight:700;margin-bottom:18px}
.brand-mini{
  width:36px;height:36px;border-radius:10px;background:var(--grad);display:flex;align-items:center;
  justify-content:center;font-size:13px;color:#07101C;font-weight:800;
}
.footer-brand p{font-size:15px;line-height:1.8;color:var(--text-sub);max-width:460px}
.footer-col h4{color:#fff;font-weight:700;font-size:16px;margin-bottom:16px;padding-bottom:8px;position:relative}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--grad)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-sub);font-size:15px;transition:color .2s ease,padding-left .25s ease}
.footer-col a:hover{color:var(--cyan);padding-left:6px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);
  color:rgba(255,255,255,.38);
}
.footer-bottom a{color:rgba(255,255,255,.42);transition:color .2s ease}
.footer-bottom a:hover{color:var(--cyan)}
@media (max-width:992px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:576px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;margin-top:32px}
}

/* back to top */
.scroll-top{
  position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;
  background:rgba(16,23,40,.88);backdrop-filter:blur(8px);border:1px solid rgba(33,240,208,.35);
  color:var(--cyan);display:flex;align-items:center;justify-content:center;z-index:70;
  transition:transform .3s ease,box-shadow .3s ease;
}
.scroll-top:hover{transform:translateY(-4px);box-shadow:0 0 22px rgba(33,240,208,.25)}
.scroll-top svg{width:18px;height:18px}